Drapery and flowstone in Chimney Dome (Figure provided by A. Frierdich)
Illinois Caverns State Park
"O'Fallon residents enjoy the park's educational cave tours and scenic picnic spots for family gatherings."
A unique state park featuring Illinois' only commercial cave open to the public.
Edward "Ted" and Pat Jones-Confluence Point State Park
"O'Fallon visitors come for a unique riverfront experience that feels far removed from suburban life. The park is a good choice for a brief outdoor excursion and wildlife viewing."
A scenic riverfront park where the Mississippi and Missouri rivers meet.
Iliniwek Village State Historic Site
"Visitors from O'Fallon may enjoy the site as a peaceful alternative to busier attractions. Its river setting and cultural significance make it a worthwhile half-day trip."
A quiet Mississippi River floodplain site preserving the location of a historic Native American village.
Mastodon State Historic Site
"O'Fallon residents may visit for a unique educational experience that pairs well with other St. Louis-area attractions. The site is especially appealing to those interested in natural history and archaeology."
An Ice Age fossil site and museum in eastern Missouri.
Graham Cave State Park
"Families from O'Fallon often visit for a nearby outdoor destination that combines a short walk with a meaningful historic site."
A historic park centered on a significant prehistoric cave site in the Loutre River valley.