Spring

The world’s largest spring-fed swimming pool — 1.3 acres of 72–76°F water in the West Texas desert. Entry $7 for ages 13+, kids free.

32 springs, two pools and a grotto waterfall on 115 acres. Day visits $11 adults / $6 kids, with tent and RV camping — no reservation for day use.

A crystal-clear artesian spring in an 81-acre natural area. Entry is free; swimming is reservation-only and currently cancelled — check before you go.

Austin’s three-acre spring-fed pool stays 68–70°F all year. Guarded swimming, $5 resident / $9 non-resident for adults — no reservation needed.

A 50-foot waterfall and jade-green pool under a limestone grotto. Reservation required, cash only — $12 per vehicle plus $8 per adult on arrival.