Located near Hackensack, Minnesota, Camp Holiday is the oldest site still being leased by Concordia Language Villages. The Camp Holiday site was originally a camp for girls built in the 1920s and many of its buildings still date from that era. The pristine lakes and traditional camp feel of Lac du Bois, Hackensack (as the program was sometimes called) offered a home to many villagers and staff summer after summer. Lac du Bois Hackensack is the longest-running French site of Concordia, also hosting the Italian Language Village "Lago del Bosco" during the summer.