Did you know? · Oslo
Oslo fun facts
Things you might not know about Oslo. Every fact comes from an official or primary source, named alongside it.
Updated October 2026
A roof you can walk on
The Opera House invites visitors to climb its roof for views over Oslo and the fjord, all year round, VisitOSLO records.
The world’s oldest ski museum
The Ski Museum at Holmenkollen was established in 1923, has been at Holmenkollen since 1951 and calls itself the world’s oldest ski museum (holmenkollen.com, VisitOSLO).
The strongest wooden ship
The Fram is the strongest wooden ship ever built and still holds the records for sailing farthest north and farthest south, VisitOSLO records.
The bells of the City Hall
The carillon in the City Hall tower is the largest in the Nordic countries and plays every hour from 07:00 to 24:00 (oslo.kommune.no).
Books for 2114
On the top floor of Deichman Bjørvika, the Future Library art project stores 100 newly written books for 100 years: they will be printed and published only in 2114, VisitOSLO records.
A boat 2,200 years old
The Stokkebåten at the Norwegian Maritime Museum is Norway’s oldest boat, about 2,200 years old, VisitOSLO records.
14,000 roses
Frogner Park holds Norway’s biggest collection of roses, 14,000 plants of 150 species, VisitOSLO records.
Questions and answers
Can you walk on the Oslo Opera House roof?
Yes, all year round.