Dottenwil Castle, Medieval castle in Wittenbach, Switzerland.

Dottenwil Castle sits on a hill roughly 1.5 kilometers north of Wittenbach, with corner towers and views across Lake Constance to the Alpstein mountains. The structure combines medieval foundations with later expansions that created a fortified appearance.

The estate of Dottenwil was first mentioned in 1302, but the castle itself was built in 1543 by Peter Graf. His daughter Weibratha inherited it with the farm in 1587; her husband Konrad Atzenholz, from a Tyrolean noble family, extended the building on two sides and added corner towers. In 1886 the municipality of Wittenbach bought the estate to house a poorhouse and retirement home.

The castle houses the Wittenbach local museum, a gallery for contemporary art, and a tavern run by changing volunteers of the Schloss Dottenwil interest group. The museum association and the interest group share responsibility for the site with the municipality. The castle's wines and a marc distilled from Gamaret pomace are served in the tavern and sold there to take away.

The castle is owned by the municipality of Wittenbach and run with the Museumsgesellschaft and the Interessengemeinschaft; the restaurant is staffed by changing volunteers, so opening times vary. The site lies on a drumlin at 617 metres northwest of the Dottenwil hamlet, about 1.5 kilometres north of Wittenbach. The wines and the marc are sold at the restaurant.

The castle includes its own vineyard, managed seasonally in spring and autumn, which shows the historical link between the site and farming traditions. This working area remains part of the visitor experience, connecting the past to everyday rural activity.