Oscarshall is an impressive structure that has housed some of the region's richest and most important families. Allow time to view it for yourself.
You'll have no end of sightseeing choices when visiting Frogner. Oscarshall is a good place to start here, but there are numerous other interesting sights to enjoy. Oslo Opera House, Karl Johan Gate, and Viking Ship Museum are close to the historic stately house and and will cap off your day nicely.
