Built in 1758 by the Colony of New Jersey during the French and Indian War, the Old Barracks was a witness in 1776 to the Battle of Trenton, the turning point of the American Revolution. Today, the Old Barracks serves as an educational center for Colonial and American history, and stands as the last remaining structure of its kind. The Old Barracks staff provides daily tours and interpretations of American colonial life. The building offers a museum of artifacts and weapons.

The site offers exhibits, tours, demonstrations, educational programs, and occasional recreational and educational events (including living history events).