The world's strongest tidal current is near the Norwegian city of Bodø. It impresses with its large whirlpools, which produce water masses reaching speeds of almost 40 km/h.
The Herrenhaus Oppenheim am Fühlinger See is an interesting Lost Place in the district of Cologne. It was built in the late 19th century next to a racecourse and is the source of all sorts of ghost stories.
Stone circles, menhirs and rock carvings - on Bornholm it is possible to discover the legacies of the Nordic ancestors from the Bronze and Iron Ages with little travel effort.
The trip to the highest point of Hammerknuden is adventurous. The reward is the fantastic view from the Hammerfyr lighthouse over the north of Bornholm.