Crown Prince Haakon and Crown Princess Mette-Marit visited Oslo's oldest youth centre, Hammersborg. It has been 70 years since the Hammersborg club started, and the Crown Prince couple took part in the celebration event. Hammersborg youth club has nearly 150 members and the children are in 5th to 7th grade. At the club, there is a workshop for hobby activities, a music room and studio, a gaming room and a small gymnasium.