San Marcos, 25 miles south of town on I-35. There is no more quintessentially Central Texan thing than enjoying a summer afternoon lazily floating down the river. The Lion's club of San Marcos rents tubes at around $8/person or canoes at $10/each. They take you to the river and pick you up.
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Showcases flowers and plant life of the area. The center is a bit southwest of downtown and worth the drive, especially during spring.
A 3.1-mile-long, paved asphalt bicycling and rollerblading trail.
A state park in southeast Austin that is rich in local history, and locally well known swimming hole feed by water falls most of the year.
This 3.4-mile track hosts Grand Prix or Formula One motor racing and other races such as MotoGP (motorcycles) and NASCAR. The complex also features a soccer stadium and a karting track. The next F1 races are 23-25 Oct 2026 then 22-24 Oct 2027.
An art installation in Austin resident Vince Hannemann's backyard built over 20 years from scrap metal and other junk, now standing at three stories high. A very interesting sculpture and probably something you find in the guidebook. Free entry but donations are welcomed. Call ahead to check if he's open. Parking is a sensitive issue with his neighbors — do not park illegally, or on private property without permission.
It is Austin's first public concrete skate park.