The 19 m high keep made of large-format masonry was built in the first third of the 13th century; further extensions were added in the 14th century. The castle stood …
The first documentary mention by Walter von Wellenberg goes back to 1204. In revenge, because of the attacks on their merchants, the people of Zurich destroy the …
The Altenburg is the ruin of a hilltop castle in the Thurgau municipality of Märstetten in Switzerland. It is the oldest stone castle in the canton of Thurgau and is …