The Hankensbüttel Otter Centre is a nature experience centre in Hankensbüttel, in the German district of Gifhorn, that is laid out in 6 hectares (15 acres) of open land by a lake known as the Isenhagener See. The Otter Centre showcases the European Otter which is a species threatened by extinction, as well as several related species of marten, in a natural environment.