Křemešník is a mountain near the city of Pelhřimov, in the Vysočina Region of the Czech Republic. Its top is 767 meters above sea level. The mountain is part of Bohemian-Moravian Highlands (Českomoravská vrchovina). The mountain was a gathering place for pilgrims. In 1710-20, a Baroque-style church was built on the top of the mountain, extending an older, Gothic church building from 1555. Calvary (stations of the cross) has been built as well.
Next to the spring with slightly radioactive water lies a small chapel from 1689. According to legend, the spring has miraculous healing abilities.