I visited the Pilsum Lighthouse (AKA Otto’s Lighthouse in 1997 when I visited my friend Cate. According to Wikipedia:
The Pilsum Lighthouse (German: Pilsumer Leuchtturm) was built in 1891 in order to provide a beacon for the Emshörn channel on Germany’s North Sea coast. It is located on a dyke near the village of Pilsum in the municipality of Krummhörn. It has guided ships through the narrow channel since 1915.
The tower grew in popularity as a result of the film Otto – Der Außerfriesische (“Otto – the Outer Frisian”) by comedian, Otto Waalkes. In the film Otto lives in the lighthouse.