Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A monument marks the location of the first successful steamboat demonstration.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

Extraordinary objects lurk in this quintessential regional museum.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

Outsider art meets paleontology at this roadside reptile repository.

An overgrown garden stands as a grim marker of an unrealized dream.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

The land is home to swimming ponies and a legendary 18th-century treasure.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

This one-room schoolhouse played a significant role in the education of Black children for almost 100 years.

Largest Roman Catholic church in North America.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The United States Capitol's former columns still stand.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

A relic of FDR's brief foray into utopian urban planning.