Jaromír Kubů started out as a guide at Kost Castle, then stayed at Sychrov Castle, at Rožmberk nad Vltavou Castle and Castle, and as a castellan at Český Šternberk Castle and Castle and at Březnice Castle. He then spent the entire thirty-one years as a castellan with his family at Karlštejn Castle, from where he returned to his native Bohemian Paradise, where he wrote colorful memories of his extraordinary life.

What does the job of a castellan entail? What is it like to take care of a famous Czech monument, prevent its devastation and help repair and restore it? How hard is it to find a piece of privacy for your family in the castle? What is it like to receive well-known personalities of cultural and social life for a visit and to attend dozens of radio and television appearances yourself? And how much is the castle really haunted? The book Nights and Days in Karlštejn tells about all this and much more.