Part of the Alamo still stands today in modern San Antonio. It is quite the juxtaposition from the surrounding current architecture. However, it is quite strange that the Texans actually lost the battle. But, it was a significant part in inspiring Texans to continue their quest for independence from Mexico. It was also interesting and ironic how many people came to Texas wanting to leave the US but Texas would eventually fold into the Union. They have a guided tour which I highly recommend and a theatre with a nice documentary on all the history that surrounds this important Texas site.
The Amtrak Train station is within walking distance the Alamo.
Make sure to visit the AMC theatre to see a movie that depicts the Battle of the Alamo