The Towers (later known as the Shirley Institute, then the BTTG, and now part of Towers Business Park) is a Grade II* listed building on Wilmslow Road in Didsbury, a suburb of Manchester, England. Built between 1868 and 1872 for John Edward Taylor to designs by Thomas Worthington, it later became the home of engineer Daniel Adamson, where the Manchester Ship Canal project was first conceived in 1882. From 1920 it served as the headquarters of the Shirley Institute, later part of the British Textile Technology Group, before the estate was redeveloped as Towers Business Park in the early 21st century. The house remains in use as offices.

The building was constructed between 1868 and 1872, for an estimated cost of £50,000. It was originally a house designed by Thomas Worthington, for the editor and proprietor of the Manchester Guardian, John Edward Taylor. The sculptural carvings were executed by the noted Victorian sculptor Thomas Earp.

The Towers was once the home of the notable engineer Daniel Adamson – whose idea for the canalisation of the Rivers Irwell and Mersey resulted in the creation of the Manchester Ship Canal project, which made the rivers into Manchester navigable for sea-going ships. He invited representatives of several Lancashire towns, local businessmen and politicians, and two civil engineers, Hamilton Fulton and Edward Leader Williams. Fulton proposed a tidal canal, with no locks and a deepened channel into Manchester; Williams was in favour of a series of locks. Both engineers were invited to submit proposals, and Williams' plans were selected to form the basis of a bill submitted to Parliament in November 1882. Due to the intense opposition by Liverpool and the railway companies, the necessary enabling Act of Parliament was not passed until 6 August 1885. Certain conditions were attached: £5 million had to be raised, and the ship canal company had to buy both the Bridgewater Canal and the Mersey & Irwell Navigation within two years.

In 1920 it became the headquarters of the Shirley Institute of the British Cotton Industry Research Association, serving as a research centre dedicated to cotton production technologies. A substantial part of the £10,000 purchase price was contributed by William Greenwood, the MP for Stockport, who asked that the building be named after his daughter, Shirley.

On 4 March 1974, The Towers, then known as the Shirley Institute, was designated a Grade II* listed building.

Following later mergers, the institute became part of the British Textile Technology Group (BTTG) in the late 1980s. The BTTG relocated from The Towers to premises in Trafford Park in 2004.

In the early 21st century, the estate land of the Shirley Institute was redeveloped and a new business park was constructed. The mansion house remains in use as office space.

The house is constructed of red brick with sandstone detailing and has slate roofs. Its plan is irregular, arranged as two parallel ranges running east–west, with a kitchen attached at the north‑east corner and a gallery at the south‑west corner. It is designed in a French château style and has two main storeys, cellars, attics and a tower. The north front is asymmetrical, with seven bays and chamfered corners, and includes a stone base, floor bands, a parapet, a slender octagonal turret to the left, an octagonal oriel to the right, and a square two‑stage tower above the entrance. All of these features have small slate spire roofs, and the tower has a corbelled cornice. The roof is steeply pitched and hipped, with several tall chimneys and gabled dormers.