A hidden architectural treasure in New York's Brooklyn.

This collection started by a Cornell professor once held more than 600 human brain specimens, including the one that belonged to its founder.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

A beautiful collection of architectural ornaments rescued from demolished New York City buildings.

The library of every book lover's dreams.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

Etchings in a pile of boulders on the Long Island Sound are a monument to vanquished native peoples.

This nature mural exists to protect the surrounding environment and its own canvas from destruction.

A showcase of geologic history is home to one of the largest collection of lunar meteorites on Earth.

Plaque remembering the 18th century forced relocation of Acadians.

On Hurricane Island, a former ghost town has been transformed into a forward-thinking research center.

Built for television, this statue now serves as an unlikely memorial to a fireman who died on 9/11.

Walk the same tracks that once ferried Gilded Age aristocrats to their vacation destinations.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

An entertaining journey through the odd and strange awaits visitors to this shop.

An old tram depot transformed into a vintage car paradise.

This snack factory boasts several tributes to its popular line of rice crackers, including a quasi-shrine.

Hidden in magnificent rolling countryside, see what may be the largest modern stone circle in the world at Wisconsin's very own "Stonehenge”

A beautiful combination of living flora with preserved bones covers the shelves of this shop.