A network of ancient Egyptian tombs built into the cliff face along the Nile.

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

Ancient Egyptian relief, claimed to depict an electrical light.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

The largest known Ancient Egyptian obelisk.

Strange rumors surround the artist who created these solemn metal guard dogs.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

100 year tradition of fist fights, marked by marble footsteps.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

In the 19th century, this was the center of Boston's Black community.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

Around 160 years ago, this spot marked the location of a wharf along the shores of the Charles River.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This sturdy, circular stronghold served as one of the forts that protected the Venetian Lagoon.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Originally a leper colony, the island is now an Armenian monastery that's home to an incredible manuscript library and eclectic museum.

Armenian monks at an island monastery in the Venetian Lagoon make a rare rose petal jam.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.