I was looking for fun outdoor activities around the Austin area and came across a miniature train I didn't know existed. It is located in Round Rock (just north of Austin), and it looks like fun. It's called the Cedar Rock Railroad, and it's just 2.50 per person for the ride (infants under 1 are free!).

It's open year round on weekends, and I think I may try to take my son to ride it sometime in the near future. I'm not sure how it compares to the Zilker train, but I'll post more if we get a chance to go soon. I do like the Zilker train, but since I live in north Austin, this one may be easier to get to.