Washington to Philadelphia road trip: 24 stops worth the detour

The bombardment Francis Scott Key watched from a ship in the harbor on the night of September 13-14, 1814, produced the poem that became 'The Star-Spangled Banner.' Check in at the star-shaped fort where the flag flew 'by dawn's early light.'

rolling Piedmont woods near Newark

A national museum devoted entirely to self-taught 'outsider' artists -- whirligigs, a giant whirligig sculpture garden, and a mirrored mosaic facade that makes it the single quirkiest museum stop in the state.

DC's largest wooded park east of the river hides a Civil War fort that never fired a shot in anger — and today its 10 miles of unpaved trail (the Fort Circle Hiker-Biker Trail) is the wildest, least-crowded hiking in the city, linking six Civil War forts along a forgotten green ring around the capital.

the retro-park that started the whole movement — the B&O Warehouse beyond right field

The last all-sail warship built by the U.S. Navy (1854), and the flagship of the Union's Africa Squadron intercepting slave ships before the Civil War. Now permanently moored at Pier 1 in Baltimore's Inner Harbor as the centerpiece of Historic Ships in Baltimore.

a wooded gorge and old blue-rock quarry near Wilmington

Housed in the 1884 Mount Clare roundhouse -- birthplace of American railroading, where the B&O's first stone was laid in 1828 -- with the country's oldest and most comprehensive collection of historic locomotives under one roof.

Alfred I. du Pont's 1910 gift to his second wife: a 77-room French neoclassical chateau modeled on Versailles and the Petit Trianon, fronted by the longest formal allee of fountains in North America -- the 'American Versailles' story is an easy, vivid hook for road-trippers.

an easy forest loop to a pretty fall near Baltimore

a shaded paved trail from Georgetown into Maryland

Henry Francis du Pont's 979-acre former estate along the Brandywine -- naturalistic gardens, an American decorative-arts collection, and one of the named cultural-institution stops that gives the Brandywine Valley National Scenic Byway its 'concentration of historic sites, magnificent estates, glorious gardens' character.

wildflower-rich piedmont trails

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.