The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

A stunning mosque owes its design to an Ottoman ruler nicknamed "the Butcher."

Submerged ruins of a Neolithic coastal settlement, where houses, wells, graves and skeletons have been unearthed.

Named for the biblical warrior, the largest castle in Israel actually dates to the Middle Ages.

Tens of thousands of rocks make up what is thought to be a giant star calendar.

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

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

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

Squeezing inside this deep, narrow canyon reveals a festival of desert colors.

Traditional Bedouin crafting has become an official tourist site and successful industry for its female craftspeople.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

Located within one of Israel's most picturesque monasteries is also the country's first meteorological research station.

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

A historic chapel filled with colorful murals and a colorful past.

The Dead Sea Scrolls were discovered in the ruins of this ancient monastic community.

Dozens of elegant ceramic tiles decorate these ancient walls, each displaying the Lord's Prayer in a different language.

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

A city built from mud and known as the "Manhattan of the desert."

One of the largest mud-brick structures in the world.

Take a ride back in time with a steam locomotive trip through Eritrea’s mountainous countryside.

The inhabitants of the world’s largest wetland have learned to navigate its dramatic seasonal changes.

Also known as the Limete Tower, la Tour de l'Échangeur can be seen from almost everywhere in Kinshasa.

This stunning waterfall is the backdrop to a site that has seen continuous human habitation for 250,000 years.

This impressive system of tanks was used to store drinking water as long as 2,000 years ago.