Outdoor escape game by Qula — not a physical escape room, but a self-guided puzzle trail through Dokkum. Dokkum is known for its centuries-old historic buildings. The City Trail takes players through the city at their own pace: on the smartphone they solve riddles and tasks that lead from place to place, past landmarks such as Admiraliteit Friesland, the Town Hall, the Bolwerken, and the Eleven Cities turning point. It is an independent treasure hunt without a guide, with the team with the most points winning.