Horseshoe Bay Resort, a golf and lakeside resort less than an hour outside of Austin and set in Texas Hill Country, opened the new pool on the edge of constant-level Lake Lyndon B. Johnson.

Not many natural pools can boast their own waterfalls ... the Barton Springs Pool in Austin, Texas, covers three acres and maintains a temperature of about 68 degrees year-round.

Nestled in a corner of Zilker Park, the Austin Nature & Science Center ... cool down with a dip in Barton Springs Pool, a 3-acre natural swimming hole. A theater, train for children and sports ...