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Cobstone Windmill
Cobstone Windmill
Cobstone Windmill
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Cobstone Mill, Ibstone

Cobstone Mill was built around 1816 on Turville Hill in Buckinghamshire, England, and overlooks the village of Turville. It is a smock mill that replaced the original mill that had stood there since the 16th century. The machinery was previously used in another mill in the village of Lacey Green.

It was a working mill grinding cereal until 1873. Later, squatters living in the mill caused a fire which damaged the centre post. After this time the mill went further into deterioration. In 1967, for the filming of Chitty Chitty Bang Bang, the mill was cosmetically restored. The cap was remoulded, and a new fantail and light wooden sails added.

The mill and cottage were purchased in 1971 by Hayley Mills and her first husband Roy Boulting, and extensive conversions and remodelling of the interiors were completed as well as interior and exterior restoration and conversion of the mill.

The mill has been used as a film location in other films and TV programmes including:

References

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Cobstone Windmill

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Cobstone Windmill is a Grade II listed located in Ibstone, , , overlooking the village of in the Hambleden Valley. Built in the late 18th or early , it features a blackened ground floor, timber-framed and weatherboarded upper structure with an lead roof, twelve sides, three storeys, paired wooden casement windows, and four wooden sails attached to a central post, along with a retained fantail and some internal machinery. The mill ceased operational use approximately 150 years ago and was cosmetically restored in 1967 for use in a before being converted into a private residence. Originally constructed as a corn-grinding in the late 18th to early , Cobstone Mill served its industrial purpose until the mid-, after which it fell into disuse. It was designated a Grade II listed building on 21 June 1955 for its special architectural and historic interest, recognized as a prominent landmark in the landscape. A significant restoration occurred around 1975, transforming the structure into a habitable home while preserving its external form, including the addition of modern amenities such as a , outbuildings, and gardens spanning over 36 acres. The windmill achieved international fame through its role in the 1968 film Chitty Chitty Bang Bang, where it portrayed the eccentric home of the inventor Caractacus Potts, played by Dick Van Dyke, in a screenplay adapted by Roald Dahl from Ian Fleming's novel. The production team enhanced its appearance for the movie, contributing to its iconic status. It has since appeared in other British productions, including episodes of The Vicar of Dibley, Midsomer Murders, Little Britain, and Jonathan Creek, further cementing its cultural significance as a picturesque filming location. In 2023, the property, which includes the main windmill residence, a brick-and-flint annexe house, a double garage with an apartment, stables, and paddocks, was placed on the market for a guide price of £9 million through , attracting interest from international buyers seeking unique heritage estates; the price was later reduced to £6.95 million before it was sold in 2025. Prior ownership included actress and director Roy Boulting following the film's production, and later industrialist Sir David Brown before its acquisition by the most recent owners in the 1980s. Though privately owned and not open to the public, the mill remains a visible accessible for viewing from nearby public paths in .

History

Construction and early operation

Cobstone Windmill was built around 1816 as a smock mill on Turville Hill in Ibstone, Buckinghamshire, within the Chiltern Hills region. The elevated position provided strong, consistent winds essential for powering the mill's sails, supporting its role in local agriculture. Designed with a timber-framed structure clad in weatherboarding above a base, the mill featured four sails and a fantail, typical of smock mills for efficient operation in variable conditions. It primarily ground corn into , serving farmers from nearby villages such as Ibstone and by processing their grain harvests. The windmill remained under the ownership and management of local millers during its early years, contributing to 's rural economy by providing a reliable milling service until 1873. This period marked its active functional use, with the machinery operating effectively to meet community needs in the pre-industrial agricultural landscape.

Decline and dereliction

Cobstone Windmill, constructed around 1816 as a for grinding , operated successfully for approximately 60 years until it was severely damaged by a fire in 1873, which led to the permanent cessation of milling activities. The fire, reportedly caused by squatters occupying the structure, compromised key elements such as the centre post, rendering the mill inoperable and marking the end of its functional life. Following the fire, the windmill was abandoned and fell into neglect, exposed to the elements without maintenance, which exacerbated its deterioration over the subsequent decades. This period of dereliction coincided with broader shifts in local during the mid- to late , where the rise of steam-powered mills—more reliable and locatable near markets and raw materials—reduced demand for traditional windmills reliant on variable winds. By the early , the structure had become a prominent ruin on Turville Hill, symbolizing the obsolescence of earlier milling technologies. In recognition of its historical importance despite its poor condition, Cobstone Windmill was designated a Grade II listed building on 21 June 1955 by the Ministry of Housing and Local Government, highlighting its special architectural and historic interest as a surviving example of early 19th-century milling heritage. This listing underscored the mill's value even in dereliction, preserving it from further degradation until later interventions.

Restoration and conversion

In 1967, the exterior of Cobstone Windmill was cosmetically restored by the production team of the film to give the appearance of an operational mill, including the addition of mock sails and remodeling of the cap and fantail. The windmill was purchased in 1971 by actress and her husband, director Roy Boulting, who initiated its full conversion into a private residence around 1975. This involved extensive interior modifications to create a comfortable family home, while preserving the external historic features such as the structure and added sails. Some original milling machinery was retained within the interior during the conversion. The property's Grade II listing was amended on January 22, 1986, recognizing its architectural and . In August 2023, Cobstone was listed for sale with a guide price of £9 million as part of a 36.7-acre estate; the price was reduced to £7 million in June 2024 after nearly a year on the market without a buyer. The property sold in October 2024.

Architecture

Design and materials

Cobstone Windmill is a twelve-sided , a characterized by its sloping, multi-sided tower that resembles the smocks worn by 19th-century farm laborers. Standing three storeys high, the mill's proportions were tailored to efficiently capture in the exposed terrain of the , facilitating optimal operation for grain grinding. The structure culminates in an ogee cap, a curved, boat-shaped roof that allows for rotation to face the wind direction. The ground floor base is constructed from blackened brick, providing a sturdy foundation resistant to in the local . The upper stages are timber-framed, with cant posts typically of or pitch pine converging at the corners, and clad in weatherboarding to protect the internal framework from the elements. This combination of materials reflects standard 19th-century , balancing with the flexibility needed for the rotating . Decorative elements enhance the mill's aesthetic, including a scalloped wooden positioned below the for visual accentuation. Paired barred wooden casement windows, renewed during 20th-century preservation efforts, punctuate the upper levels, allowing while maintaining structural integrity. The roof is lead-covered and topped by a , aiding in weatherproofing and adding a classical finial touch to the . During its conversion to residential use, minor structural adaptations were made, but the original external form was largely preserved.

Machinery and features

Cobstone Windmill features four wooden sails mounted on a central windshaft, added in 1967 during cosmetic restoration and fully restored in 2022–2023. These sails, of light timber construction similar to those typical of early 19th-century smock mills, are designed to harness for grinding grain and provide efficiency in varying wind conditions. At the rear of the mill, a fantail (added in ) with a small staging platform provides both automatic wind orientation and access for maintenance. The fantail consists of smaller vanes perpendicular to the main sails; when the wind shifts, these vanes rotate, engaging a gearing system connected to a toothed rack on the , thereby turning the entire to realign the sails with the wind direction without manual intervention. This innovation, patented in , enhanced operational reliability for mills like Cobstone. Internally, the mill preserves some machinery relocated from a mill in the nearby Lacey Green (with components dating to the 17th–19th centuries), including wooden gears and components of the winding mechanism used to adjust the manually when needed. Following the mill's conversion to a residence around 1975, this machinery was retained as non-operational displays, integrated into the living spaces while maintaining historical integrity.

Location and access

Geography

Cobstone Windmill is situated on the summit of Turville Hill in the parish of Ibstone, , at the National Grid Reference SU 76977 91496. The site lies within the , a protected landscape spanning parts of , , and neighboring counties. Positioned near the Buckinghamshire-Oxfordshire border, the windmill occupies an elevated spot at approximately 196 meters above , providing unobstructed exposure to prevailing winds across the undulating terrain. From its vantage point, the overlooks the picturesque village of below, with expansive views reaching southward to the . The surrounding landscape exemplifies the Chilterns' characteristic chalk downland, featuring rolling hills covered in dense beech woodlands interspersed with arable farmland and pastures. This topography, with its open ridges and wooded slopes, was ideally suited for windmill construction, as the elevated, windswept hilltops ensured consistent essential for .

Visiting information

Cobstone Windmill has been private property since its conversion to a residence around 1975, with no public access to the interior allowed. Visitors are restricted to external viewing only, respecting the fenced boundaries of the private estate. The best external views of the windmill can be obtained from public footpaths in village or adjacent fields on Turville Hill, where its silhouette stands out against the landscape. These vantage points offer clear sightlines without trespassing, particularly from the hillside paths leading up from the village. To reach these viewpoints, visitors can follow hiking trails from village, approximately 1-2 km one way along public rights of way. Parking is available in the village, often for free on the near the church, though spaces are limited, especially on weekends. The terrain is steep and uneven, making the route unsuitable for wheelchairs or those with mobility challenges; sturdy footwear is recommended for the uphill climb. For optimal visibility, plan visits during clear weather conditions, as the windmill's prominence on Turville Hill is best appreciated in good light. In summer, surrounding foliage may partially obscure views from lower paths, while spring and autumn provide milder conditions with fewer obstructions. Occasional guided walks in the Chilterns area, such as those organized by local rambling groups, may include viewpoints of the windmill as part of broader countryside routes.

Cultural significance

In film

Cobstone Windmill served as the iconic home of the eccentric inventor Caractacus Potts, portrayed by , and his two children in the 1968 musical fantasy film , an adaptation of Ian Fleming's 1964 children's novel of the same name. The screenplay was written by , who expanded the story's whimsical elements to suit the cinematic format. The production team selected the windmill for its isolated, picturesque hilltop position in Ibstone, , overlooking the , which effectively captured the film's inventive and fantastical tone. Producer Albert R. Broccoli's team conducted an extensive search before choosing the site, emphasizing its ability to convey a sense of secluded creativity ideal for Potts' workshop-like residence. In preparation for filming in 1967, the production funded a cosmetic restoration of the derelict structure's exterior to enhance its visual appeal, including remoulding the , installing a new fantail, and fitting light wooden sails. This work, distinct from later structural conversions, focused solely on making the mill photogenic for the screen. Key scenes featuring the include establishing exterior shots that introduce the Potts family's unconventional amid the rolling countryside, setting the stage for their adventures. While interior sequences depicting family life and Potts' inventions were recreated on sets at , the windmill's exterior symbolized the narrative's themes of ingenuity and , anchoring the story's opening and recurring motifs of and discovery.

Other media and legacy

Beyond its prominent role in Chitty Chitty Bang Bang, Cobstone Windmill has made brief appearances in several other films and television productions, often leveraging its picturesque Chilterns setting. It featured as a backdrop in the 1998 TV film , the 2003 Bollywood adaptation , and episodes of the crime series as well as the mystery show . Due to its position overlooking the village of — a key filming location for —the windmill is visible in establishing shots that capture the rural landscape synonymous with the series. As a cultural , Cobstone has become a tourist icon in , drawing visitors eager to connect with its cinematic heritage despite its private and restricted access. footpaths allow views from below, contributing to through guided walks and Chilterns trails that highlight its role in British film history. This fame has elevated its status as a symbol of quintessential English countryside charm in popular media, frequently referenced in and online discussions as an emblem of idyllic rural Britain. The windmill's cultural prominence has notably influenced property values in the area, as evidenced by its 2023 listing for £9 million—attributed in part to its iconic status—a 2024 price adjustment to £7 million, and its sale in 2025 for a guide price of £6.95 million. Its Grade II listed status, granted in 1955 by Historic England, ensures ongoing preservation efforts, including structural restorations like the recent renewal of its exterior sails, while its location within the Chilterns Area of Outstanding Natural Beauty supports broader conservation initiatives to maintain the site's historical and scenic integrity.

References

  1. https://historicengland.org.uk/listing/the-list/list-entry/1332114
  2. https://www.countrylife.co.uk/property/nothing-comes-close-as-the-majestic-and-beautiful-windmill-from-chitty-chitty-bang-bang-seeks-a-new-owner-259997
  3. https://www.bbc.com/news/uk-england-beds-bucks-herts-66474421
  4. https://search.savills.com/property-detail/gbhershes230185
  5. https://www.standard.co.uk/homesandproperty/luxury/chitty-chitty-bang-bang-windmill-on-sale-for-first-time-in-35-years-b1100176.html
  6. https://www.mansionglobal.com/articles/chitty-chitty-bang-bang-windmill-lists-as-part-of-a-9-million-country-home-de83de1f
  7. https://giggster.com/guide/movie-location/where-was-chitty-chitty-bang-bang-filmed
  8. https://metro.co.uk/2023/08/19/chitty-chitty-bang-bang-windmill-home-on-sale-for-9million-19349123/
  9. https://www.savills.co.uk/insight-and-opinion/savills-news/350496/iconic-windmill-from--chitty-chitty-bang-bang--launches-to-market
  10. https://www.bucksfreepress.co.uk/news/24377047.chitty-chitty-bang-bang-windmill-drops-asking-price-2m/
  11. https://www.buckinghamshire.gov.uk/documents/15837/Turville-conservation-area-character-survey.pdf
  12. https://www.henleystandard.co.uk/news/home/183133/iconic-chitty-chitty-bang-bang-windmill-for-sale-with-9m-tag.html
  13. https://new.millsarchive.org/2022/03/29/wood-in-millwrighting/
  14. https://www.dailymail.co.uk/news/article-13505577/windmill-Chitty-Chitty-Bang-Bang-dropping-price.html
  15. https://www.britannica.com/technology/fantail-windmill
  16. https://www.laceygreenwindmill.org.uk/history.php
  17. https://www.chilternsaonb.org/news/gentle-giants-a-blog-by-mary-tebje-for-national-mills-weekend/
  18. https://walkingwiththetaxidriver.co.uk/walks/BUCKINGHAMSHIRE-WALKS/Chiltern-Hills.php
  19. https://www.tripadvisor.com/Attraction_Review-g4090634-d10509121-Reviews-Cobstone_Windmill-Turville_Buckinghamshire_England.html
  20. https://www.alltrails.com/en-gb/trail/england/oxfordshire/hambleden-fingest-cobstone-mill-and-turville
  21. https://www.komoot.com/smarttour/1432464
  22. https://www.tripadvisor.ca/Attraction_Review-g4090634-d10509121-Reviews-Cobstone_Windmill-Turville_Buckinghamshire_England.html
  23. https://www.airial.travel/attractions/united-kingdom/stokenchurch/cobstone-windmill-turville-geL9YNtP
  24. https://theexpertcamper.co.uk/blog/hiking/a-guide-to-hiking-in-the-chiltern-hills/
  25. https://www.ramblers.org.uk/go-walking/group-walks/hambleden-turville-frieth-and-marlow-common-125-miles
  26. https://www.imdb.com/title/tt0062803/locations/
  27. https://movie-locations.com/movies/c/Chitty-Chitty-Bang-Bang.php
  28. https://www.houseandgarden.co.uk/article/chitty-chitty-bang-bang-cobstone-mill-for-sale
  29. https://www.dailymail.co.uk/news/article-12408341/A-Truly-Scrumptious-home-Windmill-featured-Chitty-Chitty-Bang-Bang-Goodnight-Mister-Tom-Jonathan-Creek-Midsomer-Murders-owned-actress-Hayley-Mills-goes-market-9m.html
  30. https://www.essentially-england.com/chitty-chitty-bang-bang-walk.html
  31. https://www.propertista.co.uk/iconic-chitty-chitty-bang-bang-windmill-discover-this-months-most-viewed-properties/
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