We took a train to the countryside to visit Karlstejn Castle. It is a large Gothic castle founded in 1348 CE by Charles IV. The castle served as a place for safekeeping the Imperial Regalia as well as the Bohemian / Czech crown jewels, holy relics, and other royal treasures. There were horses that transported people up and down the hill to the castle and David enjoyed the ride so he didn't have to walk.