Close to the city of Groningen is a nature reserve of approximately 3,500 contiguous football fields, with rugged meadows, swamp forest and plenty of room for excess water. During prolonged, heavy rainfall, this area ensures that the people of Groningen keep their feet dry. At a height of 26 metres, the watchtower offers a magnificent view: over De Onlanden, on the skyline of Groningen, on the many marsh birds and special grazers.