Noboribetsu Marine Park Nixe
The aquarium is centered around "Nixe Castle," which was built on the actual "Egeskov Castle" model in Denmark. About 400 species and 20,000 living things are on display. The entire interior of the beautiful brick castle is used as an aquarium.
The penguins in Hokkaido are so cute. It was really fun seeing them up close.
I definitely recommend visiting Hokkaido.