Maihaugen is Europe's largest open air museum and is one of the most visited tourist attractions in Lillehammer. The founder Anders Sandvig collected old houses and farmyards from Gudbrandsdal to sample Norwegian culture and history in this out- and indoor museum. Firstly in his backyard, but when his collection grew, he was offered by the town council, to serve as a permanent site in 1901. It opened in 1904.