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Castlewood State Park

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Park Information

In the early 1900s, the area that’s now Castlewood State Park was a popular retreat for partying St. Louisans. The dance clubs are gone, but the winding Meramec River and the lush valley that surrounds it remain. The park has hiking and mountain biking trails that range from those great for first-time riders to ones that even the most experienced will return to time after time. The park is considered one of the best mountain biking locations in the St. Louis area. Good fishing, broad meadows filled with wildlife, and plenty of recreational facilities make the park a favorite for people who want an adventure or just to get away.

Park Hours

Park Grounds
7 a.m. to one-half hour after sunset, year-round
Park gates open and close at these times.

Missouri State Parks and Historic Sites
May 23, 2013
Fifty years ago, if you had arrived at the natural tunnel in Bennett Spring State Park, you would have seen a lake. Around 1964, a dam created from gravel and silt and reinforced with rebar and concrete blocked the upstream entrance of the natural tunnel. There is no record of how long the resulting lake lasted, but historical accounts state the dam failed after heavy rains, leaving only the portion of the structure seen today at the end of the trail. Walk the Natural Tunnel Trail today and imagine what it would have been like 50 years ago. For more information about this trail, other trails at the park, and all the other things you can do at Bennett Spring State Park, visit mostateparks.com.