Karlstein Castle was constructed in the 14th century by the famous french architect Mathias Arras at the order by Charles the IV. In 1355 Charles the IV was crowned as an emperor of the Holy Roman empire of the German nation in Rome. As a Roman emperor Charles the IV took an obligation to protect the treasures and the saint relics of the empire. For this reason Charles the IV ordered the construction of the inaccessible fortress near the river Berounka. In the 19th century Konopiste castle was bought by the crown prince of the Habsburg throne – archduke Ferdinand d'Este. Visiting the castle and its interiors of the 19th century. You can see first ever Bohemian electric vacuum cleaner and the hydraulic lift , the well known collection of hunting trophies and firearms.