This rare aquatic phenomenon is one of the more accessible tidal bores in Morecambe Bay.

This building was once a town hall, a fire station, a prison, a dairy market, and the target for two marksmen.

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

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Where commuters walk through remnants of an ancient Greek necropolis.

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.

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

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

This incredible viaduct was part of the Victorian railway boom and helped the Midland Railway navigate tough terrain.

Massive galleon from a box-office bomb docked in Genoa.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

This peculiar Italian elevator runs both horizontally and vertically.

This massive blockhead sculpture hides an entire library.

A medieval military street hidden beneath a charming French fishing village.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

A complimentary beverage is offered to the bodega's resident rodents every day.

These legendary stone steps were once used to haul coffins up the rockface.

Abandoned for over 20 years, this Art Deco seaside swimming pool is a magnificent waste.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

The video game-themed street art first popped up in the French city.

A beautiful medieval bridge allegedly constructed by the Devil.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.