First Missouri State Capitol State Historic Site
"O'Fallon visitors may come for school trips, weekend sightseeing, or a convenient historic stop before exploring the St. Charles riverfront."
A preserved early-1800s capitol complex in downtown St. Charles where Missouri’s first legislature met.
Scott Joplin House State Historic Site
"O'Fallon residents can visit the site as part of a broader St. Louis metro itinerary. It is a worthwhile stop for anyone interested in local history and the roots of ragtime."
A restored St. Louis home honoring ragtime composer Scott Joplin and his lasting musical legacy.
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.
Sappington African American Cemetery State Historic Site
"O'Fallon travelers may visit to learn about early Black settlement patterns in the St. Louis region. The site is a worthwhile stop for those interested in heritage tourism and family history."
A historic African American cemetery preserving early regional Black heritage in St. Louis County.
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.