Oscarsborg Fortress is situated on the Oslofjord and has had the important function of defending the seaward approach to the capital. With its strategic location on an island, Oscarsborg Fortress is a very popular tourist destination, with its own marina and great biological diversity.

North of Oslo city center lies Grefsenkollen, a popular hiking destination with a great view over the city, the fjord, Holmenkollen, and the Marka forest. From the top, there are good opportunities for further hikes into the beautiful nature of Nordmarka. At the top, you will also find Grefsenkollen Restaurant with outdoor seating on the terrace throughout the summer.

The Ski Museum was established in 1923 and has been located at Holmenkollen since 1951. The museum has a the world’s largest collection of skis and winter gear. In 2023 the museum building and several of the exhibitions was rehabilitated. In addition to the thousand-year-old skis, you can see exhibitions about the polar explorers and learn about the skis' entry into Norwegian history, and how they became a central part of the Norwegian identity.

Experience Oslo's best views from the top of the ski jump hill in Holmenkollbakken.

The Fram Museum celebrates polar exploration, showcasing the historic ship Fram used by Norwegian explorers Nansen and Amundsen. Visitors can explore the ship's interior and learn about the challenges faced by early polar explorers through exhibits and interactive displays. It offers a fascinating glimpse into the pioneering spirit of exploration in the Arctic and Antarctic regions.

Norsk Folkemuseum, at Bygdøy is a museum of cultural history with extensive collections of artifacts from all social groups and all regions of the country. It also incorporates a large open-air museum with more than 150 buildings, relocated from towns and rural districts.

Akerselva, meaning Aker River, is renowned for its scenic beauty and rich history. Flowing from Maridalsvannet, it winds through the city, offering visitors a delightful mix of natural splendor and urban charm. Once the lifeblood of Oslo's industrial revolution, today it offers a walk through picturesque recreational areas, adorned with cascading waterfalls, quaint bridges, and cultural landmarks.