I am compelled to weigh in on the Alamo. Don't do it! Been to the Alamo, and I just completely don't get it. Snoozeville. There are so many better things to do...
DogBunny has a point there.
Us native-born, raised, and educated Texicans are very aware of the importance and history of the "Battle of the Alamo", seeing as how it's extensively covered in mandatory Texas state history courses, including John Wayne's "The Alamo" movie.
For folks without this indoctrination, I suppose it could be snoozeville.
Fighting your way into San Antonio, getting parking, strolling to the site, including a stroll about the Riverwalk, would burn up a full day...