Located on a hill over the small hamlet of Ojców, this castle was built in the second half of the 14th century as part of King Kazimierz the Great’s ‘OrleGniazda’ (Eagles’ Nests) line of defensive fortifications along what was then Poland’s western border, extending from Kraków to Częstochowa and entailing some 25 such medieval strongholds. Kazimierz Castle did not withstand the vicissitudes of time well however and by the early 19th century had fallen so deeply into ruin that the contemporary owner was forced to raze many of its walls before they collapsed. Today only its Gothic tower has survived, along with the entrance gate, fragments of the fortified walls and a well carved from limestone. To see what it looked like in its 15th and 16th century heyday, visit the small exhibition on its history inside. Parking is available at its foot (10zł) and the black, red, green and blue trails can all be accessed from here.