A one-of-a-kind collection of a unique medium.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

A library of only unpublished manuscripts.

Mysterious concrete spires left on a small Canadian hill.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

The grassy landscape is home to the world's last truly wild horses.

The long underground cave's curiously shaped stalagmites have inspired many legends.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

An unusual and powerful memorial in which earthquake victims are remembered by empty white chairs.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

One of the only spherical 19th century gas containers left today.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

A magical work of architecture where a wind turbine enables monks to levitate.

A massive 1830s industrial site once known as Czechia's "Iron Heart" has been transformed into a playground of science, technology, and art.

A memorial sculpture to heath hens stands on the spot where the last heath hen, Booming Ben, was last seen.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.

People can't get enough of these adorable Japanese photobooths.