This sound-art installation features songs composed using only the Mid-Hudson Bridge as an instrument.

A living antique aviation museum in the historic town of Red Hook, New York.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A castle built for love, and abandoned due to heartbreak.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

One of only two commuter aerial tramways in the United States.

A crumbling hospital from the 1850s on Roosevelt Island.

The world's longest known cave system.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

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

This 1930s-era Route 66 Tulsa landmark was moved, restored, and filled with neon.

A museum packed with instruments, lyrics, and other mementos of the American folk icon.

Tulsa's historic skyscrapers define the oil boom era of Art Deco construction, and are known for their ornate arched lobbies.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

This series of landscape dioramas tell the story of New England forestry in exacting miniature detail.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Not one, but two of Frank Lloyd Wright's architectural masterpieces nestled on the same street.

A former zoo turned public park, where visitors can hang out in the old animal cages.