11 Hidden Gems in Southern Illinois
Southern Illinois offers far more than just beautiful hiking trails and state parks. While Garden of the Gods and Giant City State Park rightfully draw crowds, this region holds countless secrets waiting to be discovered by curious travelers. From ancient cypress swamps to natural sandstone bridges, the best places to visit in Southern Illinois show off the Midwest’s diverse landscapes and hidden treasures.
These lesser-known attractions showcase the region’s unique character – places that feel worlds away from cornfields and offer experiences you simply can’t find anywhere else in Illinois.
1. Cache River State Natural Area – Southernmost Illinois
First on our list of places to visit in Southern Illinois is the state’s best-kept secret: a genuine southern swamp complete with 1,000-year-old bald cypress trees. Cache River State Natural Area encompasses nearly 15,000 acres across Johnson, Massac, and Pulaski counties and features massive cypress trees whose flared bases exceed 40 feet in circumference, with many over 1,000 years old.
The wetlands are so ecologically important that the Ramsar Convention designated them a Wetland of International Importance in 1996 – only the 19th wetland in the United States to receive this distinction. Walk the boardwalks to view the state champion bald cypress tree, or paddle through ancient waterways where over 100 species listed as endangered or threatened by the State of Illinois call this place home.
Insider tip: Visit the Henry N. Barkhausen Cache River Wetlands Center to understand this unique ecosystem before exploring the trails.
2. Pomona Natural Bridge – Shawnee National Forest
Next on our list of Southern Illinois attractions, this natural sandstone arch spans 90 feet across a rocky ravine and is considered the second largest natural span in Illinois. The 0.3-mile loop trail winds through mature oak-hickory and beech forest, leading to an overlook that reveals views of the bridge carved by millions of years of erosion.
The trail was built by the Civilian Conservation Corps in the 1930s and descends into a narrow canyon filled with seasonal waterfalls and caves. Unlike many natural bridges, you can actually walk across the top of this formation, making it both a geological wonder and an interactive experience.
Insider tip: Visit after heavy rain when waterfalls cascade through chutes in the canyon wall, creating pools of turquoise blue water beneath the arch.
3. Little Grassy Lake – Makanda Area
While this lake has faced recent changes due to infrastructure needs, it remains a hidden gem for water activities. Little Grassy Lake is a 1,200-acre reservoir located southeast of Carbondale, created by damming Little Grassy Creek. The lake is managed by the U.S. Fish and Wildlife Service as part of the Crab Orchard National Wildlife Refuge.
The surrounding area offers quiet coves perfect for kayaking and fishing, with restrictions on motor size that keep the waters peaceful. Until recently, motors were restricted to 10 h.p. or less, making it an ideal place to visit in Southern Illinois for non-motorized recreation.
Note: The lake is currently undergoing infrastructure improvements, so check current status before visiting.
4. Alto Vineyards Music Events – Alto Pass
Founded with the first vintage in 1988, Alto Vineyards established the rebirth of grape growing and winemaking in Southern Illinois and has amassed over 1,000 state, national, and international awards. They host live music on Saturday and Sunday afternoons sporadically in spring, summer, and fall, with performances held inside or outside.
As southern Illinois’ oldest winery, their wines have won more than 500 national and international awards since crafting their first vintage 32 years ago. The combination of award-winning wines and intimate musical performances creates an atmosphere reminiscent of Austin’s music scene.
5. Bell Smith Springs Recreation Area – Shawnee National Forest
Designated a National Natural Landmark in 1980, Bell Smith Springs is considered one of the most beautiful recreation areas in the Shawnee National Forest. This remote canyon is home to 20 percent of Illinois’ known flowering plants, ferns, and mosses, with clear, rocky streams of turquoise-blue water fed by the confluence of four natural springs.
The 8-mile trail system features the largest natural bridge in Illinois – spanning 125 feet long and arching 30 feet over the canyon. Other highlights include Devil’s Backbone (a series of huge boulders in a clear pool), Boulder Falls, and historic stone stairs built by the Civilian Conservation Corps in the 1930s. The area offers some of the best swimming holes in Southern Illinois.
6. Cahokia Mounds State Historic Site – Near St. Louis
Located in southern Illinois between East St. Louis and Collinsville, this pre-Columbian Native American site spans over 2,200 acres and preserves what remains of an ancient city that once covered 6 square miles.
This UNESCO World Heritage Site is the single biggest pre-Columbian settlement north of Mexico, with more than 100 mounds spread across acres of land. It offers a fascinating glimpse into Illinois’ ancient past that few visitors expect to find.
7. Shawnee National Forest’s Hidden Trails
Beyond the popular spots, Shawnee National Forest contains numerous lesser-known trails and geological formations. The forest encompasses much of Southern Illinois and offers diverse experiences from wetlands to rocky bluffs, each with their own character and hidden features waiting to be discovered.
8. Southern Illinois Wine Trail Experience
The region features multiple award-winning wineries along the Shawnee Hills Wine Trail, offering scenic vineyard views and events throughout the year. Von Jakob Winery & Brewery offers nearly 20 varieties of Illinois wines plus handcrafted beers, with panoramic views of orchards and vineyards against the backdrop of Shawnee National Forest.
9. Giant City State Park’s Stone Fort
While Giant City gets plenty of visitors, many miss the archaeological features. The park contains remnants of ancient stone structures built by indigenous peoples, offering a glimpse into the area’s rich cultural history beyond its natural beauty.
10. Crab Orchard National Wildlife Refuge
This expansive refuge offers diverse habitats and wildlife viewing opportunities often overlooked by visitors focused on state parks. The refuge encompasses multiple lakes and wetland areas, each offering different recreational opportunities.
11. Historic Towns and Local Culture
Southern Illinois features charming small towns like Makanda, which has earned recognition for its unique character and local shops. Makanda has been voted “Hippiest town in Illinois” and offers cool shops with a funky vibe, though services and hours can be limited.
Planning Your Visit
Southern Illinois offers year-round attractions, though spring and fall provide the most comfortable weather for outdoor activities. Many of these hidden gems are within driving distance of each other, making it possible to experience several in a single trip.
The region’s diversity means you can experience swampland cypress trees, natural rock bridges, award-winning wineries, and ancient archaeological sites all within the same area – something virtually impossible to find elsewhere in the Midwest.
Whether you’re seeking natural wonders, cultural experiences, or simply a peaceful escape from urban life, Southern Illinois’ hidden gems offer authentic experiences that showcase the region’s unique character and natural beauty.