Discover Karlstein castle one of Czech Republic's prized treasures. This high gothic castle was built in 1348 and overlooks the beautiful Karlstien village and valley. The castle was originally built by Czech King and Roman Emperor Charles IV with the impressive 60 meter high great tower for safekeeping of the royal treasures, especially Charles's collection of holy relics and the coronation jewels of the Roman Empire. Click on thumbnails to view 360º virtual tours of the castle. The Czech Republic tourist board are currently using this technology to increase Czech Republic tourism.