Hot Springs National Park
Hot Springs, AR · Ouachita MountainsFree
Rain that fell about 4,000 years ago comes up in downtown Hot Springs, Arkansas, at an average of 143 degrees. You can't soak in it outdoors. For a full bath in the thermal water…

Photo: Dave Bunnell / CC BY-SA 4.0
Blanchard Springs Caverns, near Mountain View, Arkansas, closes after the 2026 season, which runs through October, for its first major renovation since the 1970s, and a grand reopening is anticipated in 2028. The shorter Dripstone Trail starts at the bottom of a 216-foot elevator ride and goes about half a mile to the Cathedral Room, more than 1,000 feet long, with a column about 65 feet tall. The Discovery Trail is much harder: 686 stair steps over 1.2 miles, past the underground stream that feeds Blanchard Springs. The cave is 58 degrees and wet underfoot, and there are no restrooms below ground.