In 1551 Untersulmetingen Castle was acquired by Johann Jakob Fugger. His successors altered the castle fundamentally. Around 1600, the gabled roof was constructed.W. Wittig, Landadel-Schlösser in Baden-Würtemberg, p. 296 In 1608, Trajan Fugger added a Rococo-style chapel to the castle.A. Schahl, Die Bau- und Kunstgeschichte von Laupheim und Umgebung, p. 321 He invested a large sum to embellish the castle itself and its precinct, erecting a gatehouse, a castle garden, a tithe barn and several economy buildings.H. Beth, Geschichte von Untersulmetingen, p. 412f. In 1729, the castle was mortgaged to Ochsenhausen Abbey which ultimately bought the castle in 1735.W. Wittig, Landadel-Schlösser in Baden-Würtemberg, p. 296
