Unique Things to Do in San Marcos, TX

San Marcos, TX's most unique experiences include Hays County Courthouse, Spring Lake Natural Area, The Meadows Center for Water and the Environment, and Wonder World Cave & Adventure Park.

4 places3 freeOct 2026
The Meadows Center for Water and the Environment

Glass-bottom boats since 1945 — see the springs that feed the entire river

201 San Marcos Springs Dr, San Marcos, TX 78666 · Daily 10am-5pm, boats every 30 min

$9.75 adults, $8 seniors, $6 kids 3-12, free under 2
Wonder World Cave & Adventure Park

Only earthquake-formed show cave in the US — open since 1894

1000 Prospect St, San Marcos, TX 78666 · Fri-Sun 10am-5pm (check seasonal hours)

$25-30 adults, discounts for kids
Spring Lake Natural Area

12,000 years of continuous human habitation — trails around a spring that never stops

601 University Dr, San Marcos, TX 78666 · Daily, dawn to dusk

Free
Hays County Courthouse

1908 Romanesque courthouse on the square — Saturday farmers market outside

137 N Guadalupe St, San Marcos, TX 78666 · Exterior always visible; Saturday market 9am-1pm

Free