Inner Space Cavern 150 mi
A cavern right off Interstate 35 in Georgetown, north of Austin, with tours every 20 minutes and a steady 72°F inside.
Georgetown, TX, 72°F inside
Caves near Houston, TX
6 show caves with public tours within 250 miles of Houston. The closest is Inner Space Cavern, about 150 miles away.
Distances are straight-line miles from downtown Houston; driving takes longer. Tour details checked 2026-10-22 against each cave's own site.
Wonder World Cave 155 mi
An earthquake-formed cave along the Balcones Fault in San Marcos, part of a small adventure park open Friday through Sunday.
San Marcos, TX, from $25.00
Natural Bridge Caverns 179 mi
The largest commercial cavern in Texas, near San Antonio, with guided tours down to 180 feet below the Hill Country.
San Antonio, TX, 70°F inside, from $25
Longhorn Cavern 189 mi
A cavern in Burnet, Texas, about 90 minutes from Austin, entered down 52 stone steps, at 68°F all year.
Burnet, TX, 68°F inside
Cave Without a Name 195 mi
A cave 11 miles northeast of Boerne with 60-minute guided tours through six rooms at 66°F, and concerts in its Throne Room.
Boerne, TX, 66°F inside, from $23
Cascade Caverns 198 mi
A cave in Boerne, Texas with fully guided 45–60 minute tours down to 132 feet, every hour of every day, at about 63°F.
Boerne, TX, 63°F inside, from $19.95