You may not be a fan of the Opera, but a visit to - or rather up ON - the Oslo Opera house is a good idea. Wether as a stop on a walk along the seafront, which I really recommend, or as a single destination. It is a nice walk on the roof there, with good view to both older an newer parts of the…
The Opera House is also always recommended to tourists, it is close to the central station about 250 metres from there, and worldknown for its design. People like to take a walk on the roof and view the ocean, eat an icecream if the weather is good and enjoy the special architecture and art.