Outdoor escape game by Qula — not a physical escape room, but a self-guided puzzle route through Leiden. Leiden has 2 different routes. Leiden is known for its university, museums and canals. The City Trail takes players at their own pace through the city: on the smartphone you solve riddles and complete tasks that lead you from place to place, including De Burcht, De Waag, the Orphanage and Pilgrims Gate. It's an independent treasure hunt without a guide, where the team with the most points wins.