Swedish King Carl XVI Gustaf and Queen Silvia are in Finland on Monday to take part in the 50th anniversary celebration of the Hanasaari Swedish-Finnish Cultural Centre in Espoo.
Finnish President Alexander Stubb and his spouse, Suzanne Innes-Stubb, greeted the royal couple at the Presidential Palace in downtown Helsinki.
Around 200 guests were invited to the event, according to Svenska Yle, the public broadcaster's Swedish-language news unit. Attendees included Sweden's former prime minister Carl Bildt.
Along with then-Finnish president Urho Kekkonen, King Gustav formally opened the cultural centre on 1 June 1975.
The cultural centre is meant to promote cooperation between Finland and Sweden. Hanasaari (Hanaholmen in Swedish) is a small island in the western part of Espoo.
Apart from the cultural centre, Hanasaari is also home to a 66-room hotel featuring Nordic 1970s-era design and decor.