A giant time capsule not scheduled to be cored until 2040.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Memorializing an American tragedy of massive proportions.

Steepest flood safety railway in the entire world.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

These disused steel furnaces are now haunting ruins that may one day be a national park.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

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

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

A "miracle" that seems to produce more holy fistfights than holy revelations.

This family tattoo parlor has been inking religious pilgrims in the Middle East for 700 years.

The remains of this ancient fortress atop a manmade hill look as though they were built into a volcano.

The tallest waterfall in the Judean Desert is named for its connection to a biblical figure.

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.

A massive, heart-shaped, wind-carved crater in the middle of the Israeli desert.

After over 100 years out of service this landmark windmill once again turns as a symbol of Jerusalem's self-sufficiency.

The only quarter of the Old City not dedicated to a major world religion.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."