Vasa Museum

A fantastic museum featuring the Vasa, a ship built in the 17th century that sank in Stockholm harbor on her maiden voyage in 1628. The ship was salvaged 333 years later and is still being renovated and restored. At the museum you'll see the Vasa yourself, as well as exhibits about how the ship was built, how sailors on lived on similar ships in the 1600s, and other topics related to maritime history.

Skansen

Sweden's open-air history museum offers buildings from throughout Swedish history and across its various regions. Living history interpreters will tell you about the buildings, most of which you can enter. There's also a zoo featuring animals from throughout Scandinavia.

Norway Resistance Museum

A fascinating presentation of the history of the Norwegian resistance against the German occupation during World War II.

Viking Ship Museum (Vikingskipshuset)

A museum with a collection of 3 Viking ships from the 10th century. Two of the ships are remarkably well preserved—almost completely intact—while one is missing about half its structure. The ships were used in ceremonial burials, so they sank with numerous gifts and artifacts.

Norsk Folkemuseum

An open-air folk museum containing buildings from Norwegian history, some dating to the medieval period. Highlights include a stave church from the 1200s and farmhouses and schoolhouses with soil and grass roofs.

Hanseatic Museum and Schøtstuene

History and culture museum housed in a merchant's home dating from 1704. The museum traces the history of Bergen and the Hanseatic League, a powerful confederation of guilds and merchants that dominated northern Europe's economy for centuries.

Prado

Spain's national art museum houses one of the finest collections of European art in the world, with pieces dating to the 12th century. Truly one of the great museums of the world, the Prado should not be missed. Allow a half day - it's huge.