The Alamo is most famous for the Battle of the Alamo, which took place in 1836. The battle was a part of the Texas Revolution, and it is considered to be one of the most famous battles in American history. The Alamo was a Spanish mission that had been converted into a fort, and it was defended by a small group of Texan soldiers. The Texans were outnumbered and outgunned by the Mexican army, but they held out for 13 days before they were defeated. The Battle of the Alamo is remembered as a symbol of Texan courage and determination, and it is still celebrated today as a major historical event.