See massive fossils that are over 200 million years old in northeastern Arizona.

A multi-storied adobe complex has been inhabited for more than a thousand years.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

A house carved into a rock in the 1940s.

Oddly shaped rock formation, misassociated with a nearby utopian community.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Where commuters walk through remnants of an ancient Greek necropolis.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.

Historic medieval fortified city in southwest France.

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

This blowhole is supposedly caused by a trapped monster.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An encyclopedic collection of mammal penises.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

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

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

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

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