The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

The palace of the King of Kings, burned by Alexander the Great.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

This former cathedral is now a bustling library packed with students and pigeons.

This dizzying span over the ancient Algerian city was once the highest suspension bridge in the world.

This grubby wall is said to be one of the Earth's esoteric energy centers.

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

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

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

A statue honors the children who fought Nazis in Poland.

This French colonial post office is arguably the grandest in all of Southeast Asia.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

Giant pagoda houses the car that drove Thích Quảng Đức to his death by self-immolation.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

The spot where the two men ate together now stands enclosed in glass.

This tiny Vietnamese village is known for eating snakes and serving their still-beating hearts in shots of vodka.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

An extravagant monument to an extravagantly unpopular Emperor.