Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

This empty Detroit high school was too expensive to maintain or destroy.

The world’s largest Masonic temple was saved by the White Stripes.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

An extravagant western hotel where every floor is the "ground floor."

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A contemporary fresco movement illustrates the region's rich history.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

An old drug store full of mortars and pestles, pill-making machines, and medicines reputed to cure most any illness.

Where a young athlete began his run across Canada after losing his right leg to cancer.

The first transatlantic wireless signal was received at this 17th-century fort.

A World War II gun battery sits at the easternmost point of North America.

An unexpected desert oasis in South America.

One of the world's most advanced radio observatories sprawls across the Atacama Desert.

What was once a unique system of urban elevators is turning into a mechanical ruin.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.