18/06/2026
**Château Mammertshofen** is a historic castle located in **Switzerland**, near the town of Roggwil in the canton of Thurgau. It dates back to the **13th century** and has undergone various modifications over the centuries. Originally built as a medieval fortress, it now combines stone and timber architecture, showcasing a mix of medieval and later Swiss styles. The castle has served different purposes throughout history, including noble residence and private ownership. Today, it stands as a well-preserved example of Switzerland’s medieval heritage.