Church of Saint Procopius, Gothic church ruin in Krupka, Czech Republic.

Church of Saint Procopius is a Gothic ruin in Krupka featuring characteristic pointed arches and stone walls that display medieval building methods. The structure retains enough detail to understand the original layout and the craftsmanship of its builders.

Built as the parish church of the vanished mining village of Kirchlice in Gothic style in the second half of the 13th century, it lost that status in 1331. It was enlarged in the early 15th century and given a three-aisled west section in the early 16th century, then altered between 1643 and 1677. A fire in 1939 brought down the vaults and the gable, leaving it a ruin ever since.

This church was dedicated to Saint Procopius of Sázava and reflected the spiritual role it held for the medieval community. The Gothic style visible in the remains shows how architecture expressed religious importance to those who gathered here.

The site is located in central Krupka and is easy to reach when visiting this church. Visitors should expect rough surfaces and uneven ground since this is an ancient ruin.

A local legend, versified by František Cajthaml as "Mše duchů v kostelíčku Svatoprokopském", tells of a devout old woman who narrowly escapes the undead during a ghost mass but dies of shock within two days; it echoes Erben's Svatební košile.