On March 17, 2022, Crown Prince Haakon and Crown Princess Mette-Marit of Norway visited Mangfoldhuset Mortensrud (The House of Diversity, Mortensrud Volunteer Center) in Søndre Nordstrand district of Oslo. Mangfolshuset is a meeting place for people from different nations in Mortensrud. Mangfoldshuset offer activities such as trips, Norwegian language training, exercise, etc. Søndre Nordstrand is a borough of the city of Oslo, and it has the highest rate of immigrant population.