10. Fort Sewall, Massachusetts
Overlooking Marblehead Harbor, Fort Sewall quietly protected the Massachusetts coast during both the Revolutionary War and the War of 1812. Though less renowned than other colonial defenses, its sturdy earthworks and steadfast garrison played a vital role in warding off enemy ships. Today, Fort Sewall endures as a beautifully maintained historic park, inviting visitors to stroll its ramparts and imagine the tense moments when America’s independence truly hung in the balance.
