Land Between the Lakes National Recreation Area
Recreation area and former biosphere reserve (1991-2017) in the United States of America.
Each edition grades its towns against each other only.

Our list finds nothing inside Belknap, but 6 places within 40 miles. The commonest are 2 ancient sites, 2 museums and a national forest. Beyond the town, the best known is Land Between the Lakes National Recreation Area, 58 mi off.

United States National Forest located in Southern Illinois.
The towns around it, and where to stay →
Furthest out is Columbus-Belmont State Park, at 40 mi.
Orange: Belknap. Numbers: the best-known places, matching the list below. © OpenStreetMap contributors
These 8 are within 60 miles, none in town.
Recreation area and former biosphere reserve (1991-2017) in the United States of America.
United States National Forest located in Southern Illinois.
Park and former military fortification in Cairo, Illinois, United States.
Ranked by how many people look them up, so the famous places lead and the local favorites follow.
Parks and trails in Belknap → · Belknap’s history →
Land Between the Lakes National Recreation Area: http://www.terraprints.com, CC BY 2.5 · Shawnee National Forest: Daniel Schwen, CC BY-SA 4.0 · Garden of the Gods Wilderness: Daniel Schwen, CC BY-SA 4.0 · Kincaid Mounds State Historic Site: Herb Roe, CC BY-SA 4.0 · Cave-in-Rock State Park: Daniel Schwen, CC BY-SA 4.0 · Magnolia Manor: MuZemike, CC BY-SA 3.0 · Columbus-Belmont State Park: Knowledgeum at en.wikipedia, Public domain