Visitors can plunge into the rich world of migratory fish in the exciting Mosellum in Koblenz. The attraction opened in 2011 and uses interactive exhibits to vividly depict the Moselle river and its fish. Visitors can find a lot of information about eels, salmon and other fish The pinnacle can be found in the Mosellum basement. Here you can look directly into the Koblenz fish world through three large windows. But the bird's-eye view onto the fishway from the roof terrace has its charms too.