Hidden gems in Oslo

The Royal Palace (Norwegian: Slottet or Det kongelige slott) in Oslo was built in the first half of the 19th century as the Norwegian residence of the French-born Charles XIV John, who reigned as king of Norway and Sweden. The palace is the official residence of the current Norwegian monarch while the crown prince resides at Skaugum in Asker west of Oslo.

Oslo City Museum (Oslo Bymuseum) is a department of Oslo Museum in Oslo, Norway since 2006. The museum is located at Frogner Manor (Frogner Hovedgård) in Frogner Park (Frognerparken).

Norsk Folkemuseum (Norwegian Museum of Cultural History), at Bygdøy, Oslo, Norway, 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.

The Viking Ship Museum (Norwegian: Vikingskipshuset på Bygdøy) is located on the Bygdøy peninsula in Oslo, Norway. It is temporarily closed from September 2021 until 2027.

St. Olav's Cathedral (Norwegian: Sankt Olav domkirke) is the cathedral of the Roman Catholic Diocese of Oslo and the parish church of St.