Anholt Castle

51°50′40.85″N 6°25′38.40″E / 51.8446806°N 6.4273333°E / 51.8446806; 6.4273333

Anholt Castle (German: Wasserburg Anholt or German: Schloss Anholt) is a monumental moated castle and former princely seat in the municipality of Isselburg, North Rhine-Westphalia, Germany, close to the Dutch border where the Münsterland meets the Lower Rhine region. First documented in the late 12th century as a strategic stronghold of the Prince-Bishopric of Utrecht, it developed into the imperially immediate Lordship of Anholt during the Middle Ages and, from 1647, the hereditary residence of the princely House of Salm-Salm. Dominated by its massive round Dicke Turm keep and encircled by a broad water defence fed by the river Issel, the complex is regarded as one of the largest and best preserved water castles in western Germany.

Architecturally, the present ensemble blends medieval foundations with a baroque remodelling carried out around 1700, when Prince Charles Theodore of Salm transformed the medieval fortress into a stately home, added formal gardens and unified the façades under slate roofs. Although 70 percent destroyed in 1945, Schloss Anholt was meticulously restored and now serves a triple role as private residence, museum and leisure destination. Visitors can tour richly furnished state rooms, view the state’s largest privately owned art collection (including works by Rembrandt, Jan van Goyen, and Gerard ter Borch), stroll through reconstructed baroque and English landscape gardens, and enjoy amenities such as a hotel restaurant, wildlife park and golf course—all of which make the castle a cultural landmark and economic hub for the region.

In 1169, a Lord of Zuylen "of Anholt" appears for the first time as a vassal of Utrecht bishop Godfrey van Rhenen. Historians therefore assume the water castle was built before that year. By the time of Stephan IV of Zuylen († c. 1347), who freed Anholt’s inhabitants from serfdom on 25 May 1347, the feudal tie to Utrecht had ended and the site had become an imperial immediate lordship within the Holy Roman Empire, later part of the Lower Rhenish–Westphalian Circle.

When the Anholt branch of the Zuylens died out in 1380, castle and lordship passed via Herberga, daughter of Diederik II van Zuylen, to her husband Hermann III of Gemen. In 1402, their daughter Margaretha married Gysbert of Bronkhorst‑Batenburg, handing Anholt to the Bronkhorst family; Emperor Sigismund confirmed their rights in 1431.

The Guelders Wars (1487 – 1499) first thrust Anholt into the wider European power struggle between Duke Charles of Egmond and the coalition of King later Emperor Maximilian I and John II, Duke of Cleves. Gysbert’s son Jakob I von Bronckhorst Batenburg, lord of Anholt, sided with Maximilian; Charles retaliated with an abortive coup against the castle in 1499 and returned with a full siege in 1512. After three months—a garrison weakened by plague and short supplies—Anholt capitulated and remained a Guelders possession for a quarter century. Dietrich III von Bronckhorst negotiated its recovery in 1537, though only by paying heavy war contributions and granting Duke Charles open access; Emperor Charles V absolved the lordship of these obligations three years later, restoring the family’s hard won status as an immediate Imperial territory.

That immunity proved fragile. During the opening phase of the Eighty Years’ War, the Protestant Dutch Geuzen demanded Anholt’s adhesion to the Union of Utrecht; Catholic lord Dietrich von Bronckhorst refused and—trusting in safe conduct—opened the town gates for parley, only to see it looted and burned until relief forces from Duke William of Jülich-Cleves-Berg arrived. The Thirty Years’ War brought a second cycle of occupation and plunder. Amid the turmoil, Emperor Ferdinand II elevated Dietrich IV and his brother Johann Jakob to Imperial Counts (1621), but the male line ended in 1649. In anticipation, Dietrich IV had already transferred the county in 1647 to his son in law Count Leopold Philipp Karl zu Salm, ushering in the continuous ownership of the House of Salm Salm.

Under Prince Charles Theodore of Salm (1645–1710) Anholt emerged from its war scarred shell as a fashionable Baroque-style residence. Between 1697 and 1703 the Milanese architect Tommaso Tommassini reshaped the outer bailey; around 1700 the medieval keep gained its soaring slate clad spire, all façades were rendered and ruled to imitate ashlar, and a two storey garden pavilion opened the house to newly laid French parterres. Courtly ambition matched architecture: a distinguished picture gallery began to form.