Actutally a "four-fer", spread among a quartet of museums: in city centre: the Ethnographic Collection (historic artifacts from Scandinavia and across the globe, notably an excellent array of Egyptian antiquities including mummies), the Coin Cabinet (coins, medals, and other forms of currency daating back 2,600 years), the Historical Museum (especially strong in Scandinavian prehistory and the Middle Ages); and out on the nearby Bygdøy Peninsula, the Viking Ship Museum (unfortunately closed for a couple more years, expected to reopen as the Museum of the Viking Age in 2025 or 2026).

It's part of Tripatini member Dayna Stephens's post 5 of Oslo's Top Attractions.