The ghost Olli haunts the Olympiastadion, hiding objects and playing tricks. Children aged 5 to 12 go on a ghost hunt through the darkened, empty stadium, led by an experienced guide. Together they search indoor and outdoor areas for hidden clues, and solving a final task reveals where Olli is hiding. A flashlight is useful but optional for dark corners. The tour lasts about 45 minutes. Registered children must be accompanied by an adult.

Details can change — check the event’s website before you go.