The United States Capitol's former columns still stand.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A kaleidoscopic warehouse-maze of handmade neon signs.

A toxic ghost town sitting atop a massive coal fire.

The ghostly remains of an accidental sea.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

An enormous, inside-out glass globe built in 1935.

The legendary building that needed ghostly approval before being built.

Dramatic river bend surrounds a natural red-rocked pedestal.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

An eerie, derelict amusement park in Berlin.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

An exquisite tunnel of cascading flowers.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

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

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.