Most tourists don't realize it, but in addition to being one of the most-visited sites in the United States, the Alamo is also an active archeological site. And during its newest excavation, it unearthed a doozy — a fully-intact cannonball that can be traced back to Texas' most famous battle.

The Alamo first broke the news on Stories Bigger Than Texas: The Alamo Podcast. The artillery shell was discovered on March 5, 2026, a day before the 190th anniversary of the Battle of the Alamo.

"I have chills now, just thinking about it," the Alamo's Director of Archaeology, Dr. Tiffany Lindley, told the podcast hosts. "March 5th is when we pulled it out of the ground. I don't think words can express the feelings that we all felt."

The cannonball is four pounds and made of solid bronze.Photo courtesy of the Alamo Trust

The four-pound, solid bronze cannonball was discovered approximately three feet below ground outside the Alamo Church. The dig’s layers of soil settled in a clearly visible pattern, allowing the archeologists to date the object with near certainty.“

"We can’t say with 100% certainty that it came from the Mexican Army, but I would say 99% because largely the Mexican Army is using bronze cannonballs and largely the Texans are using iron cannonballs," said Alamo's Senior Researcher and Historian Kolby Lanham. "Doesn’t mean they didn’t capture each other’s stuff and use it, but I would say with a fair amount of certainty that this is a Mexican Army cannonball and it was likely fired at the Battle of the Alamo — or it could have been during the 12-day siege.”

The cannonball isn’t the only Alamo artifact that was recently discovered. In January, the trust celebrated the return of one of the 1836 cannons. The weapon was found by a descendant of Samuel Maverick’s family, who said it was used as the base of a birdbath.