A marvel of Byzantine engineering under the streets of Istanbul.

Skyscraper powered by wind turbines attached between its towers.

This beautifully historic Bahrain fortress might not be the most popular attraction around, but that might make it all the better.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

The site of a bloody showdown between invading Iraqi forces and a cell of the popular resistance in Kuwait.

This road earned its macabre nickname after hundreds of Iraqi troops died along it in 1991.

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.

Lived-in building, bedecked with an astonishing array of mirror mosaics.

Feed it cash, get your very own gold bar.

The opulent car collection of an eccentric Sheikh housed in his own private pyramid.

No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

One of the largest sand dunes in the world is nicknamed the "Scary Mountain" due to its steep slope and sharp incline.

This enormous sports car themed amusement park is home to the world’s fastest roller coaster.

The oldest surviving mosque in the UAE has mysterious origins and unusual architecture.

Whitewashed mosque contains the world's largest carpet.

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

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

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

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

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.