In the early 18th century, European dances like polka, waltz, reel and schottische begin to arrive via Denmark. These foreign dances are today known as "gömlu dansarnir" or literally the "old dances". After their arrival, native dance and song traditions fell into serious decline. For a long time, "rímur" were officially banned by the church. Paradoxically, many Icelandic priests were keen in making "rímur". "Rímur" remained popular recreation until the early 20th century. In recent years, efforts have been made to revive native Icelandic forms. For example, a modern revitalization of the "Rímur" tradition began in 1929 with the formation of the organization Iðunn.