Photo: LoneStarMike, CC BY 3.0 Free landmarks in Austin
Photo: LoneStarMike, CC BY 3.0 
Photo: LoneStarMike, CC BY-SA 3.0 Congress Avenue Bridge bats
Free at certain times
Photo: Jouaienttoi, CC BY-SA 4.0 Rainey Street
Free, always
Photo: ajay_suresh, CC BY 4.0 Sixth Street
Free, always
Photo: Larry D. Moore, CC BY 4.0 UT Tower
Free outside, paid inside
Photo: ajay_suresh, CC BY 4.0