Karlštejn Castle was founded in 1348 by the Charles IV, King of Bohemia and Holy Roman Emperor as his private residence and a place of safekeeping royal treasures, especially his collections of holy relics and the Imperial Crown Jewels. In 1355 Charles IV stayed here for the first time, overseeing the construction and decoration work, especially in chapels. The construction was completed in 1365 when the Chapel of the Holy Cross in the Great Tower was consecrated. Over the centuries the castle has always been in hands of the king or a state institution, never in private hands. Nowadays it is owned by the state. Very impressive is the preserved original stair-arrangement of individual castle buildings. The lower section with a small courtyard by the Well Tower and the Burgrave´s House continue through the majestic five-storey Imperial Palace and the Marian Tower. At the highest point, the construction of the castle culminates in a monumental, 60-meter-high Great Tower and its massive fortifications. A unique original 14th-century wall decoration, a set of 129 paintings created by Master Theodoric in the Chapel of the Holy Cross (the largest in the world), the largest portrait gallery of kings of Bohemia in the Czech Republic, a replica of the royal Crown of Bohemia, a unique castle well. The castle is also famous as a set to a comedy play Night at Karlštejn Castle by Czech poet Jaroslav Vrchlický. https://www.hrad-karlstejn.cz/en/about