Shadowlands Haunt Index
for Texas says the Alamo is haunted.
Specifically, it states, "Cold spots and a feeling of melancholy can be felt throughout the Fort. 189 Alamo defenders and at least 1200 Mexican soldiers fought and died here in San Antonio, many without the benefit of a proper burial leaving a lot of lost souls in search of a eternal resting place, thus making San Antonio one of the most haunted cities in America.
I just want to throw my $.02 in, and say that each time I've been there, I haven't felt any kind of single haunt, or anything uncomfortable.
Each time I've been, since it happened the first time when I was about 9 or 10, I will go over by a wall, and wait. After a few minutes, I can no longer hear the people around me, and I get a sense of timelessness, and of being outside the present. I get a distinct feeling that the walls themselves have a long memory, and they will share what they know, if you are patient.