One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

The world's smallest drawbridge.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

2300-year-old Roman road connecting the empire.

Ancient human, animal, and geometric figures drawn in the earth.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This record-setting hydraulic dam in the Montana badlands was one of FDR's most ambitious public works.

The only road through the heart of Glacier National Park.

Roadside collection of 65,000 signs.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

A sleepy little town that had the greatest landslide in North American history fall on it.

Live long and prosper in Vulcan, Alberta.

As if T-rex wasn't big enough, this Canadian monument is four times larger than the real thing.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

Fossils, railroads, and waterfalls!

A mysterious taxidermy man-beast of the seven seas.

Beautiful mostly-abandoned town only accessible by sea-worthy boat or plane.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

These once-beautiful historic graveyards are set against the barren Virginia City hills.