A grand entrance to one of the world's smallest Chinatowns.

A Volkswagen Beetle decorated with millions of beads connects Mexico's past and future.

A commemorative mural in this tiny Ballard park honors the neighborhood's rich Scandinavian ties, particularly with Seattle's Norwegian sister city Bergen.

This former coal gasification plant found a curious second life as a popular public park.

A giant Troll lurks under one of Seattle's oldest bridges.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

This large, circular tomb is the final resting place of the first emperor of Rome.

A forgotten "city of water" underneath the famous Trevi district.

Jesus' footprints and the first catacombs in the world.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

A subterranean shelter remains intact under a busy Paris railway station.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The oldest stone house in Paris was built by its most famous alchemist.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Abandoned railway line circling the city of Paris.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

The mummified relics of an American missionary.

Little Red Lighthouse under the George Washington Bridge.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.