Discover Leiden in a fun and interactive way with the Secrets of Leiden City Game, a self-guided scavenger hunt and walking tour through the historic centre of Leiden, the Netherlands. This GPS-based exploration game combines sightseeing with puzzles, riddles and creative photo challenges as you uncover hidden stories around the Pieterskerk, Leiden University Academiegebouw and windmill Molen De Valk. Perfect for tourists, friends, families and team outings, this self-guided walking tour of Leiden can be played solo or in groups. The City Game Leiden takes about 2 hours and you play at your own pace. One ticket is valid for 1 to 4 people; for larger groups simply purchase extra tickets. Choose a start date and time when booking, then begin whenever it suits you. A smartphone with an internet connection is required. Your Leiden adventure starts at windmill Molen De Valk. After booking, you receive an email with your instructions and game link. Download the free Loquiz app before you set off, head to the start location and open the link to begin - no guide to meet and no building to enter. Pause anytime and continue later, for a flexible adventure through Leiden.