Den Blå Planet

"Den Blå Planet—the Blue Planet—is one of Europe’s biggest aquariums. It’s organized into three main zones—northern lakes and seas, the oceans, and tropical rivers and lakes—so you can explore typical Scandinavian habitats, or view sea otters, herring, and crayfish, or keep the kids entertained by tracking down more exotic creatures such as piranhas, electric eels, and poison frogs. The Danes take a matter-of-fact approach to their wildlife and often do workshops in which visitors are invited to watch an animal being dissected. Located close to Copenhagen Airport, the aquarium is easily reached by public transportation."