
Before the United States existed, these ten military sites were already making history. They witnessed conflict and change, serving as strongholds and symbols of power. Explore the now-evolved landmarks—colonial fortifications used by the Armed Forces and Coast Guard, some as museums. Discover how these places, shaped by battles and revolutions, helped forge a nation.
Carlisle Barracks, Pennsylvania

In 1757, Carlisle Barracks was established as a British frontier outpost and later became a prisoner-of-war camp during the Revolution. Today, it houses the prestigious US Army War College, a hub for defense education and strategic leadership for officers from all branches of the US Troops.
Fort Stanwix, New York

A tactical fort used in the French and Indian Battle, Fort Stanwix was built in 1758 and served as a key defense point in the Mohawk Valley. In 1951, the site was repurposed for the RADC to advance radar and cyber technologies for the US Air Force. It now operates as the AFRL Information Directorate.
Governors Island, New York

Away from the hustle and bustle of New York City is the Governors Island. Now, it is a peaceful oasis that features historical tours and cultural events. It is also the home to an active Coast Guard station. First fortified in 1637, Governors Island served as an imperative martial base under Dutch and British rule.
Norfolk Naval Shipyard, Virginia

A vital hub for the US Navy, Norfolk Naval Shipyard was established in 1767 as a British shipyard. During the Revolution, skilled shipwrights built vessels for the Continental Navy. As of 2023, the shipyard employs over 10,000 civilians and soldiers, a significant contributor to the local economy.
Fort Crown Point, New York

Clashes during the French and Indian conflict marked this Lake Champlain stronghold. Built in 1759 by the British on the 1734 French Fort St. Frédéric site, it recalls the region’s turbulent past. The US Army Corps of Engineers operates to preserve this historic site, which occasionally hosts events for servicemen.
Fort Mifflin, Pennsylvania

The oldest fort in continuous use by the US military, Fort Mifflin stands as an attestation to American resilience and is currently utilized by the US Army Corps of Engineers for training and support. Built in 1771 on the banks of the Delaware River, it endured a relentless bombardment by the British.
Castle Island, Massachusetts

Overlooking Boston Harbor, this has been a tactical point of defense since the 17th century. Home to Fort Independence, it witnessed the evolution of American sea power for centuries. Even with its modern Coast Guard station, the echoes of cannons that once protected Boston’s shores remain.
Fort Algernourne, Virginia

Fort Algernourne (1609), later Fort Monroe, contains centuries of American history. It was deactivated as an active Army base in 2011. Preserving a complex legacy, it still houses US Army TRADOC offices. During the Great Rebellion, it became known as “Freedom’s Fortress,” a refuge for escaped slaves.
Fort Niagara, New York

Fort Niagara (1679) saw centuries of conflict as European powers and Native American nations clashed to control the Great Lakes. Today, the “French Castle” is a reminder of this contested past, while the US Coast Guard maintains an active presence, ensuring maritime safety and security.
Fort Ticonderoga, New York

Now a privately owned historic site and museum, the French built Fort Ticonderoga in 1755 and played a role in the Guerre de la Conquête and the American Revolution. Famously captured by Ethan Allen and the Green Mountain Boys in 1775, this strategic fort was present for numerous battles and sieges.