There are wide trails on both sides of the river going through downtown Austin. Great for biking, wildlife, flowers, and people watching.
The spring is great time in Austin.
Verde Camp is a great place to stay in the South Congress area. Beautiful neighborhoods, walk to fun shops, and great eating. Austin Food Tours does a great SoCo food tour, we did the downtown tour that starts at the downtown farmers market. This is a great husband and wife team that take you to some of the best eats around.
We rode the bikes down to the South Congress Bridge to watch the mexican freetail bats that fly out from under the bridge. We had a great view on a grassy knoll. I put a video from my phone on You Tube.
