A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

A hands-off space for graffiti artists to hone and display their skills.

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

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

The saddest little diner in New York.

A legendary speakeasy bookstore returns from the brink.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

The notorious headquarters of a corrupt political machine.

A dilapidated dock tells the story of Titanic's missed arrival.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

This wooden home was built in West Virginia by a Scottish immigrant before being moved to an Israeli winery.

Through a collection of modern bric-a-brac this museum tells the story of the Jewish people from Biblical times to today.

A more chill but no less fascinating version of the famous ancient archeological site.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Poseidon? No one seems to know.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

Cretean quarry suggests real-life site for ancient Greek myth of the man-eating Minotaur in his labyrinth.

The hallucinogenic center of the ancient world.

This legendary city has been a tourist attraction for centuries.