Schloss Allmendingen, Cultural heritage monument in Allmendingen, Germany.

Schloss Allmendingen is a three-story castle with two corner towers located in the center of Allmendingen and connected to the New Castle via a corridor. The building features rooms and structural elements that reflect its evolving use across centuries.

The Old Castle's construction date is unknown; in 1516 Johannes Renner is named as owner, and by 1527 the family had left because the old Schlösschen had decayed. In 1593 the Renners sold their share to Ehingen for 70,000 gulden, and the city passed it the same year to Hans Walter von Freyberg zu Altheim. The New Castle was built 1783–84 by the Freyberg-Eisenberg family, who still own it.

The name Allmendingen appears in 1516 with Johannes Renner, imperial councillor and commissioner, named as owner of the castle; the Renner family left for Ehingen in 1527 because the old "Schlösschen" had decayed. In the chapel north of the New Castle stands the gravestone of Walburga von Kopenhagen, who died in 1789. The park behind the castle was laid out in the last third of the 19th century.

The castle is now private property of the Freyberg family and can only be viewed from outside, with visitors required to respect the perimeter boundaries. Take time to observe the exterior architecture and its connection to the New Castle from different angles.

The Old Castle was conceived as a moated water castle, ringed by trenches on all sides. Two towers stood on the west side facing today's street, and one of them still stands. The drawbridge over the moat led to a stair tower on the east side, where the "Langer Bau" now runs; the entrance is on the north side today.