－What You Can Expect －Meet your assistant at the meeting point to pick up your tickets. While picking up the tickets you'll have a 20-minute introduction about the history and main information on the tower, so once you get there it will feel like you know the place.Then, visit the clock on your own. Every hour two small trapdoors open and the twelve apostles march out to tell their stories. The Grim Reaper also rings a bell, checking to see whose time has come (unsurprisingly, everyone shakes their heads 'no').There are also planetary motion, the zodiac and more on the clock - and 75% of its parts are original, like 'from-the-15th-century' original.You'll get to skip the lines and take the stairs or an elevator up the tower. From there you'll have amazing views over the Old Town Square and the rest of Prague's Old Town.