In the early twentieth century, Interlaken began holding its Old Home Days festival, originally hosted by the Interlaken Fire Department. Some research into the phenomenon of the “Olde Home Days” shows that most of them were inaugurated in the very late 19th or early 20th century, just about the time that the majority of the population of the United States was shifting from being rural to urban. These festivals were an opportunity for the first generation of city dwellers to return to their hometowns and celebrate the rural experience of their youth. Diane Bassette Nelson, former president of the Interlaken Historical Society and one of the organizers of Olde Home Day. “It goes back to about 1930 in Interlaken,” she said. “Then it died back a bit after the 1980s and came back in the mid-1990s, and it has been going since.” 

With the revival of Olde Home Days in the 1990's came a new committee to organize and host the event - the Interlaken Community Action Group (ICAG). This new organization began to grow beyond only hosting Olde Home Days, with other community events coming under its organization. In January 2025, ICAG was officially incorporated as a 501(c)(3) nonprofit organization, and continues to grow and evolve to meet the needs of the communities it supports.