Ceremony Time：Need to Request
By far the most popular destination in the Czech Republic after Prague, Karlstejn Castle is an easy day trip for those interested in getting out of the city. Charles IV built this medieval castle from 1348 to 1357 to safeguard the crown jewels of the Holy Roman Empire. Although the castle had been changed over the years, with such additions as late Gothic staircases and bridges, renovators have removed these additions, restoring the castle to its original medieval state.
(informations source from Karistejn Castle official website)