Fort DuPont State Park sits along the Delaware River in Delaware City, where nearly 300 acres of military history meet coastal marshland and wooded trails. Built as a Civil War-era fortification and active through World War II, the park preserves concrete gun batteries, officer quarters, and enlisted barracks that give visitors a tangible connection to over a century of American defense history.

The park’s trail network winds through mature hardwood forest and along the riverfront, offering views across the Delaware to Fort Delaware on Pea Patch Island and Fort Mott across the water in New Jersey — together forming a rare tri-fort defense system you can explore in a single day trip. Birders will find the tidal marshes productive year-round, with herons, egrets, and migrating shorebirds frequenting the wetland edges.

Walking the old post roads between deteriorating barracks has a haunting, atmospheric quality that history buffs and photographers particularly appreciate. The park is also home to a growing redevelopment that includes a canal district and event spaces, blending preservation with new life for the grounds.

Spring and fall deliver the most comfortable conditions for exploring on foot, with fewer crowds and ideal temperatures for covering the park’s full network of paths. Summer brings humidity but also peak wildlife activity in the marshes.

With a 4.3-star rating from visitors and free admission, Fort DuPont is one of New Castle County’s most underrated outdoor destinations — equal parts history lesson and riverside escape.

Explore Nearby

• New Castle Range Rear Light — Lighthouse in Delaware
• New Castle Range Front Light — Lighthouse in Delaware
• Wooddale Bridge — Covered Bridge in South Carolina
• Brandywine Valley Scenic Byway — Scenic Byway in Delaware
• Ashland Covered Bridge — Covered Bridge in South Carolina