The Pyšolec Castle ruin is probably from the 13th century. It towers on the hill of the same name above the buffer reservoir Vír II on the river Svratka. It is protected as a cultural monument of the Czech Republic. Pyšolec Castle was mostly built at the beginning of the 14th century (or in the 13th century) in the Gothic style, as evidenced by its preserved ruins. The general opinion that this was due to an increase in the number of Pernštejn family members and the need for new settlements is unfounded. In the first half of the 14th century, there was no significant increase in the number of members of the Pernštejn family. Moreover, given the extent of their then states, it is difficult to assume that they would build their settlements in close proximity, when they belonged to the area from Doubravník to the highest peaks of Žďárské vrchy. After all, the Pernštejns never used the name of the castle in their predicate, which excludes the direct relationship of their members to the locality.
Source - Wikipedia