In front of the ABBA Museum is a photo of the Swedish pop group members (left to right) Benny Andersson, Anni-Frid Lyngstad, Agnetha Fältskog and Björn Ulvaeus. Their faces have cutouts that allow tourists to replace their own for a photo op. The band was only active for ten years starting in 1972. Yet their music is still widely heard, especially in the stage production of “Mama Mia!” The museum of memorabilia opened in Stockholm in May of 2013.