- The list below includes 143 free or cheap things to do in or near Arnold, Missouri, including 71 different types of inexpensive activities like Movie Theaters, Bowling, Parks and Landmarks.
- From Arnold City Park to Arnold City of, there are a variety of budget-friendly attractions in Arnold and in nearby cities within 25 miles like St. Louis, Ballwin, Chesterfield and Belleville.
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Open since 2003, Bo's Hollow replicates rural life in the 1930s. Guests can wander through the hollow and see sights like an outhouse and a working windmill, and then take a 15 minute ride in a Model A.