A haunted hill that supposedly defied gravity.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Where manatees are the snowbird vacationers in these balmy Florida springs.

Mysterious stone tower featured in many alternative histories of the New World.

Abandoned Coast Artillery fort now serves as a graffiti canvas and sightseeing vantage point.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Quite simply the largest tree in the world (by volume).

An artsy hidden staircase leads to breathtaking views of San Francisco.

Glass and concrete building designed by Albert Kahn.

Enormous small-business mecca in the Midwest, serving dozens of artists.

The birthplace of the Ford Model T is now a museum full of antique cars.

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

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

This former county courthouse was originally an opulent hotel and entertainment venue.

This factory made "health corsets" that were a step towards liberating women's bodies.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

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

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

In the 19th century, this was the center of Boston's Black community.

A centuries-old church stands as a testament to Boston's "father of architecture."