Schloss Mammertshofen, Medieval castle in Roggwil, Switzerland
The castle features a massive keep with 2.8-meter-thick walls and incorporates giant glacial blocks exceeding two meters in length into its construction.
Built around 1240, the castle served as the seat of Saint Gall marshals until 1360 when their lineage ended and later passed to the Schenk von Castell family.
The castle maintains its status as a Class A Swiss cultural property, representing the architectural evolution of eastern Switzerland through multiple centuries.
Visitors can access the castle grounds through a stone bridge that replaced the original wooden drawbridge, with the entrance located in the southeast corner.
The castle's keep contains enormous glacial stones weighing up to three tons, making it one of the most substantial defensive towers in Switzerland.
Location: Roggwil
Location: Thurgau
Part of: list of cultural properties in Roggwil TG
Address: Mammertshofen 1–1.4, 9325 Roggwil TG 9325 9325
GPS coordinates: 47.49461,9.39794
Latest update: March 7, 2025 03:39
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