Kost Castle is one of the best-preserved Czech castles from the late Gothic period. It was founded in the mid 14th century by Beneš of Vartenberk.
Despite a lot of renovation activities, the original silhouette is well-preserved. Its dominating elements are the rectangular Bílá Věž (White Tower) and a smaller cylindric tower named Lidomorka (Hungry Tower). The premises comprise the original Kost Castle and the Renaissance Bibrštejn and Lobkowicz Palace (added later). Visitors are offered four guided tours.
Locality: the rocks 4 km to the west from Sobotka.