The skeletal white beams stand as a monument to religious dissent.

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

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

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

This maze-like slot canyon is a unique gem within an already fascinating geological area.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

A collection of artifacts from Maryland's maritime past.

This former asylum for Black Americans is haunted by its history of violence and racism.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

Walk through the history of American pop culture.

Remnants of a storybook amusement park hidden behind a strip mall.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

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

An unusual sculpture, an interesting history, in a strange place, for a good cause.

One of the largest collections of Catalan literature and cultural materials outside of Spain, created by a community of 1960s expats.

This four-story steel sphere in Maryland was used to test biological weapons.

The elevator hidden in a smokestack on Roosevelt's yacht now serves as a monument to the former president.

The Decoy Capital of the World.

An allegorical sculpture in Maryland wears the artist’s politics on its trunk.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.