This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

Some believe that this ancient mural depicts technology far ahead of its time, but in reality it's nothing quite out of place.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

Numerous stone coffins from different centuries, lined up in a sixth century basilica.

An often overlooked ancient site in downtown Athens with substantial history (and nature).

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

The medieval network of canals hidden underneath the city is opened to explorers each year.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

One of the indelible moments of the American Revolution took place at this location.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

A historic Montreal market that was the city's agricultural hub for over century.

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.