Montana’s largest permanent display of antique and classic motorcycles is a collection that can be seen at the Miracle of America Museum. Delve into the personal lives of the bike builders and riders through it’s over 70 vintage “Iron Steeds” and around 4,000 pieces of memorabilia. Currently a 1912 Harley belt drive single is the oldest. At last count there were 8 sidecar rigs (some of them have given rides in local parades) and the Miracle of America Museum annual Live History Days, which is held the 3rd weekend in July. Nine racers include a 1913 excelsior, 1918 Indian, 1917 Harley flat tracker, and a 1934 Harley hill climber.