Well--if you're recommending the Alamo so he can "remember" it--don't forget Goliad---it's not far, and we have to "remember" that, too--That's where they had the canon (which is still there, btw), and the black and white flag that said "COME AND TAKE IT".
Also, for a very early Texas beer that is still brewed and popular here, Shiner and Shiner Bock are beloved by many.