The ruined doorway is a portal to the building's turbulent and torturous past.

A sharp sculpture made of thousands of pieces of jagged glass.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

Where commuters walk through remnants of an ancient Greek necropolis.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

An ancient octagonal weather station named for the eight Greek gods of wind.

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

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.

Ancient Greek oracle of the dead.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

This neo-Gothic former auto showroom is one of the few remaining reminders of Brooklyn's "Automobile Row."

This legendary city has been a tourist attraction for centuries.

Large collection from the 3rd millennium BCE.

The hallucinogenic center of the ancient world.

The world-record holder for the longest bridge stretching continuously over water.

Memorial to the 137 lives lost on a ship fire, the whole hulk of which washed up on the Asbury Park shore.

Marie told fortunes from her small stand on the Boardwalk for decades, including to a young Bruce Springsteen who would busk outside her booth.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A unique tribute to the millions of animals who served and died for the British military.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

Used as an example in one of the first dictionary entries for "museum" in 1706.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.