Delaware Legislative Hall & The Green (First State Heritage Park)

Attraction

A free, hangar-sized museum of giant Cold War and modern cargo/tanker aircraft (C-5 Galaxy, C-141 Starlifter, KC-135) parked wingtip to wingtip at an active Air Force base -- walk under planes that once ferried the nation's airlift missions, no admission charged.

Attraction

Built around illustrator Howard Pyle and his student N.C. Wyeth (godfather of the Brandywine School of American illustration), plus the largest Pre-Raphaelite art collection outside the UK -- a surprising, story-rich stop that most road-trippers wouldn't expect to find in Wilmington.

Landmark

At the foot of this 1859 lighthouse sits a 1751 stone marker with the Penn coat of arms on one face and the Calvert coat of arms on the other -- the actual survey monument that settled the Delaware/Maryland border dispute and let this 87-foot tower plug the last dangerous 60-mile dark gap in the coast between Cape Henlopen and Assateague.

Landmark

This is the newest piece of the national park system in Delaware -- 1,100+ acres donated by conservationists, capped by a 2021 254-acre expansion funded partly by Mt. Cuba Center, preserving Brandywine River scenery that a Quaker industrialist started protecting from development over a century ago.

Landmark

A Civil War fort on an island you can only reach by boat -- 33,000 Confederate POWs passed through here, and today costumed interpreters and a haunted-history reputation make it one of the most atmospheric stops in the state. The ferry ride itself, past channel markers and osprey nests, is part of the experience.

Attraction

The du Pont family's original 1802 gunpowder works on the Brandywine -- walk between reconstructed powder yards, a working 19th-century machine shop, and the family's first American home, all on 235 riverside acres. The origin story of the entire du Pont/Brandywine Valley dynasty that also built Winterthur and Nemours, so it anchors the corridor rather than duplicating it.