There are many moonlight towers in Austin! They were built back in 1894, and you still can randomly run across them. Over the years I've also seen many caches associated with these towers, but they come and go. This multicache will take you to three towers. The first two stages will provide the coordinates to the final. All stages are physical.
Note: In some cases, the location will just bring you near a tower, so don't overly focus on the towers for solutions. Since the towers were built so long ago, some are now on private property, so respect your surroundings!
Regarding the distance, I don't love multis that require driving but unfortunately this one probably does. The first two stages should be easy park and grabs. The last stage may require some parking, walking, and avoiding muggles.
Enjoy the towers! They still work over 100 years later!