Gustavianum is the oldest standing building of Uppsala University, completed in the 1620s and used as the main university house for over two centuries. Today it is the university museum, holding collections that range from Egyptian mummies and Viking-age finds to scientific instruments owned by Linnaeus and Celsius.
The crowning attraction is the anatomical theatre under the distinctive octagonal cupola: a steep wooden amphitheatre where students once watched winter dissections by lantern light. The Augsburg Art Cabinet — a marquetry showcase commissioned by Gustavus Adolphus and crammed with carved curiosities — is on permanent display, along with rotating exhibitions drawn from the university's research collections.
Gustavianum sits directly opposite the cathedral, on Akademigatan. Closed on Mondays; a modest admission fee applies. Allow at least an hour for the main galleries and the theatre.