Barton Springs

A huge spring-fed natural pool, located in Zilker Park, provides swimmers with water that stays a constant 68 degrees Fahrenheit. A charming sub-culture of young adults and seniors can be found here at 7 a.m. year-round. A small admission charge is required after 9 am. Zilker park has a giant playground and various gardens (Xeriscape, Rose, Japanese, Native). Swim free in summer every evening from 9-10 pm, and enjoy the party that happens on the nights of the full moon. www.ci.austin.tx.us/parks/bartonsprings.htm