In former Lake Rangers Headquarters building at Lake Nasworthy built by Works Progress Admin. Natural science and history museum interpreting the Edwards Plateau region. Displays feature native wildlife: live reptiles and amphibians, mounted birds and other wildlife, 200-gallon aquarium, glass-enclosed beehive, and ant farm. Audio visual programs. Open Tues. - Sat. noon - 5 p.m. Trail is open from sunrise to sunset. In Mary Lee Park on Knickerbocker at Lake Nasworthy.