Velešov Castle, Gothic castle ruin in Potštejn, Czech Republic.

Velešov Castle is a ruined castle on a steep hill about one kilometre northwest of Potštejn Castle. Only terrain relics and small fragments of walls remain, including a trapezoidal outer bailey with a neck ditch and a rectangular core with a two-room palace on the north side.

Velešov was founded by the lords of Potštejn after Margrave Charles destroyed their castle at Potštejn around 1339 and forbade its rebuilding. Velešov is first mentioned in 1356, when King Charles IV restored Potštejn and acquired Velešov with its estate, after which Velešov lost importance and was abandoned. In 1771–1773 Count Jan Antonín Harbuval Chamaré searched in vain for treasure and badly damaged the ruins.

The name Velešov comes from the hill on which the castle was founded by the lords of Potštejn. The site is now a cultural monument of the Czech Republic, protected since 1964, and its remains are freely accessible to visitors.

A branch off the red-marked hiking trail and the Velešov educational trail lead to the summit, which was cleared of trees and adapted as a viewpoint in 2008. The terrain is uneven, with remnants of ditches and wall fragments.

Between 1771 and 1773 Count Jan Antonín Harbuval Chamaré searched the ruins for treasure, damaging the castle badly. Stone from the dismantled walls was then hauled to Potštejn by cable and used to build the wall around the chateau park.