On Tüskendörsee was formerly the insurmountable "water border" between West and Ostland. Today a nature reserve that is very popular in the world of birds.
At the Tüskendörsee, the island used to be divided into two halves: Westland and Ostland (Tüskendör means in between). The creek was only drained in the 1860s. The lake was …