There is no McCallister House Museum in Colorado Springs—or anywhere in the real world. The iconic McCallister family home from the 1990 blockbuster Home Alone is a fictional residence set in the fictional Chicago suburb of Winnetka, Illinois.
The exterior and interior shots were filmed at a private residence located at 671 Lincoln Avenue, Winnetka, Illinois, on Chicago's affluent North Shore. The house is a private home, not a museum, and is not open for tours.
There is no known link between the film's production and Colorado Springs. The query likely stems from confusion with another location or a similarly named historic property in the area (such as the Glen Eyrie Castle or Rock Ledge Ranch Historic Site).