Photo: LoneStarMike, CC BY-SA 3.0 Free nature spots in Austin
Photo: LoneStarMike, CC BY-SA 3.0 
Photo: LoneStarMike, CC BY-SA 3.0 Lady Bird Lake Hike-and-Bike Trail
Free, alwaysMayfield Park
Free, always
Photo: Bryanrutherford0, CC BY-SA 4.0 Pease Park
Free, always
Photo: Larry D. Moore, CC BY 4.0 Treaty Oak
Free, always
Photo: Julia Duffy JTduffy, Public domain