Saint Arnold's is Houston's local, microbrewery and Texas' oldest craft brewery.  They have a wide variety of beers including Amber Ale, Brown Ale, Texas Wheat, Fancy Lawnmower, Elissa IPA and seasonals.  They have tours every Saturday from 1p.m.-3 p.m. and costs $5 per person. You receive a St. Arnold's souvenir tasting glass for four tastings, which comes out to about two pints.  

The brewery also sells St. Arnold's memorabilia including pint glasses (of all kinds), t-shirts, hats and so much more.
Fun place to go for a tour of a brewery, enjoy some good beer and hang out for a couple of hours.

http://www.saintarnold.com