Price per group of 2-6 people. Within 2 hours, the Qula Groningen City Trail leads you along the best spots in Groningen, while you play fun riddles and assignments on your smartphone. Try to set a high score with family or friends and explore the city. There are no fixed start times or reservations, you choose your own day and time. The Trail is available 24/7 and there is no time limit - you can start, pause and stop whenever it suits...