The mummified relic of St. Antoninus.

Cold war icon and onetime "hole" in the iron curtain.

Built by the Portuguese colonists in the early 16th century, this fort is one of the oldest European structure in Asia.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

A naturally mummified 2,000-year-old man.

The other side is actually green.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

Go inside to really appreciate this 500-year-old technological masterpiece.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

This stunning and ethereal mural symbolizes the beauty, unity, and diversity of humankind.

The enigmatic skull gazes out over the ruins of a once-great Mayan city.

This 45-story tall abandoned skyscraper is the third tallest building in New Orleans and Lousiana.

One of the greatest collections of coins in the world is housed in the former mansion of an archeological pioneer.

A Byzantine-era church hidden in a wooded area below the Acropolis.

The unusually large seat sits atop the base of a ruined temple.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

An innovative local park built from an abandoned sewage treatment plant.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

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

Singapore's oldest Hindu temple.