Karlštejn castle, a Gothic gem, located in the middle of dense forests about an hour drive from Prague, is one of the most popular destinations in the Czech Republic. It was founded in the 14th century by Charles IV, the King of Bohemia, to serve as a place for safekeeping the Empire coronation jewels and other royal treasures. You’ll be impressed by the interiors of this medieval castle, and the picturesque surroundings will take your breath away.