Nydalen is a district in the Nordre Aker area in northern Oslo. Since the late 19th century Nydalen has been a largely industrial area. Beginning in the 1990s, it gradually transformed into a mix of "lighter" service industries and residential areas.

The Kon-Tiki Museum houses vessels and maps from the Kon-Tiki expedition, as well as a library. The museum was originally built to house the Kon-Tiki, a raft of balsa wood of pre-Columbian model that Norwegian adventurer Thor Heyerdahl used to sail from Peru to Polynesia in 1947. Another boat in the museum is the Ra II, a vessel built of reeds according to Heyerdahl's perception of an ancient Egyptian seagoing boat.

Akerselva is a river which flows through Oslo. Akerselva is "Oslo’s green lung”; many parks and nature trails are to be found by its path, from Grønland to Maridalsvannet. A walk from along Akerselven from the rural Frysja down through the different parts of Oslo all the way down to the city centre is an amazing experience and a walk through the history of Oslo. Salmon run and spawn in the upper part of the river.