The Grand Canyon of Texas.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

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

A sharp bend in a dramatic river canyon cut through red rocks.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

The home of the Dead Sea Scrolls is an abstract modernist dream.

This subterranean funicular is one of the world's smallest subways.

This ancient village is peopled by a religious minority and is still using some of the same materials it was built with thousands of years ago.

Hidden beneath a washing machine in a fake kibbutz, this secret bullet factory has been preserved as a museum.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

World's smallest skyscraper, the product of a remarkable con.

This downtown Dallas art installation is always on the lookout.

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

A museum honoring Oklahoma military service, where you can look into Hitler's mirror and see a Mickey Mouse gas mask.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

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

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

Where animatronic singing fish go to retire.

A mysterious air force base built to resemble a Long Island fishing village.

An eccentric playboy's astounding natural history collection.

A millionaire's abandoned swimming pool from the gilded age of one of America's most distinguished families.

An eatery for UFO seekers on the Extraterrestrial Highway.