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

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

One street divides a single town that stands in two U.S. states.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

The most photographed house in Maine looks good enough to eat.

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

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A Cold War site complete with rusty structures, hiking trails, and beautiful views.

A second generation sun-powered marvel lights up the night.

A lonely Gondola stuck on a traffic circle sits in a spot where it once would have floated down the Grand Canal.

A spiritual vortex among the red rocks in Sedona.

Two large posteriors in one giant statue.

The surviving remnants of a destroyed medieval church now stand in a public park.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

This pun was simply waiting to come to life, and one defense contractor made it so.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The national park was once a plantation estate.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

A humid oasis combines recreation with exploration in a unique underwater cavern.

This remarkable prehistoric town is full of watchtowers and houses that have withstood thousands of years.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

The beginning of the historic Iditarod Trail connecting the Alaskan cities of Seward and Nome.

For this chef, an active volcano is his oven.