Frischenberg Castle

Frischenberg Castle - Credit: Wikimedia Commons

Frischenberg is a ruined castle in Sennwald, canton of St. Gallen, Switzerland. It was built in the early 14th century by the lords of Hohensax, probably by Ulrich III von Hohensax some time after 1313. It was destroyed and rebuilt in 1446, and abandoned in 1551. Read more on Wikipedia

type: military installation
date from: 1313

Source: en.wikipedia.org