If you are near the North Austin city limit marker on Interstate I35, you are minutes away from a convenient, family afternoon treat: the attractive, clean, and safe environs of the only minor league stadium in the Central Texas area-- the place the "Round Rock Express" calls home.
Although this facility is something of a landmark, only a baseball fanatic would even suggest you consider this the primary purpose of a visit to this area of the State. A great add-on though if you are visiting other attractions in the area like the University of Texas, the State Capital complex, etc.
The almost new, speck and span facility, which touts lots of convenient parking, decent food, good seating, modest ticket pricing etc. is located a few miles East of Interstate I35 on Texas Highway 79. Here you can enjoy an afternoon of fun with family or friends as you mingle with the friendly, hospitable locals. This is "major-league" entertainment presented at a somewhat lower skill-setting but gobs of color, sights, and sounds that can only mean "baseball".
For those who prefer air-conditioned, somewhat sterile setting, this is not the place. In particular if you must avoid sunshine, do not attend an afternoon summer game but opt for the early evening engagements.
I am confident you will be pleased even if you are just a casual baseball fan and very pleased if you enjoy college-level play. But if you are the only one in your group that detests the game regardless of the skill level, not to worry as you could easily while away your time at the essentially on-site BBQ restaurant, "The Salt Lick" which is the Round Rock version of the Austin BBQ classic by the same name. (Do not miss this "diversion" before or after the game if you are a BBQ aficionado!).