The nature conservation centre houses an exhibition on bird migration, a small restaurant and seminar rooms.
The drained lake was used for a long time for agricultural purposes before it was purchased in 1975 by the German Society for the Protection of Birds (Deutscher Bund für Vogelschutz)[1] and the district of Ostholstein.
The reserve also took part in a LIFE project for improving the protection of the Baltic Sea lagoons, cooperating with Danish and Swedish partners.
In March 2010 NABU Wallnau was given responsibility for three other nature reserves on Fehmarn, thus creating a linked conservation system on the island.
The peninsula of Spitzenort and the islands in the Lemkenhafener Wiek, which are home to inter alia a large colony of herring gulls, will also be looked after by NABU Wallnau in the future.
On 23 December 1977 ownership of the 298 hectares (740 acres) site, designated as a nature reserve by the state of Schleswig-Holstein, was transferred to NABU.