7. Butler Trail
The park land surrounding the Colorado River in Austin is scattered with all sorts of bizarro features that stand out from your regular park. During the summer, you can run down to the Congress Ave Bridge spanning Lady Bird Lake (formerly Town Lake) and see over a million bats emerging from the underside of the bridge. Sure, the Butler trail encircling the lake offers all sorts of other cool stuff, like a natural springs swimming area and a modern steel boardwalk, but, you know, A MILLION BATS.