Tour description provided by Viator

Explore the sunniest capital of Scandinavia with this 24-hour ticket aboard a City Sightseeing open-top double-decker bus. See all the main sights of Oslo as you hop on and hop off at 17 conveniently located stops around the city.

With great views from the top of the bus, strategically placed stops and an interesting commentary, this truly is the best way to see the main sights of Oslo.You can hop on and off as many times as you like aboard this City Sightseeing open-top, double-decker bus. There are 17 stops, and the entire route takes approximately 90 minutes. The bus departs every 30 minutes from each stop. Tickets are valid for 24 hours only.Oslo, the oldest and sunniest of the Scandinavian capitals, was founded by Harald Hadrade in the 11th century and is surrounded by mountains at the head of a 70-mile (100 kilometer) fjord. You can visit Akershus Fortress, or feel like a real Viking at the Viking Ship Museum.