A natural formation that resembles a camel resting in the New Mexico desert.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

This museum offers an actual time machine back through Colorado's past.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

The Grand Canyon of Texas.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

A haunted hill that supposedly defied gravity.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

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

One of the largest underground systems runs under Canada's largest urban center.

A building so large that it has its own weather.

When ecosystems collide in the arid Southwest.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.