Initially it may have been a refuge castle or a fortified church built during the Middle Ages.

By the early 14th century it was the administrative center of all the Aspermont estates in Upper Prättigau.

However, to avoid conflicts with the League, most of the vogts were local Graubünden nobles instead of Austrian.

[2] For the next century and a half, the castle remained the center of a Habsburg territory in Graubünden.

Another construction phase in the 16th or 17th century added a 5 meters (16 ft) wide zwinger and outer wall with a half-round tower.

The barbican and outer tower included firing slits for firearms or small cannons.

It records that in the 17th century, the residence wing had become a richly outfitted, two-story palas.

The buildings in the courtyard included a well, stables, a laundry and a heated bath house.