The unexpectedly beloved remnants of a controversial thermal power plant.

Mountain where Jesus was first tempted by the Devil.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A poignant memorial to remember the Australian nurses who lost their lives during the Second World War.

Commemorating the 19th-century labor movement in Australia.

This classic photo booth was saved from destruction by the local community.

Children's author May Gibbs's beloved stories about the tiny, human-like "Gumnut Babies" are immortalized in bronze.

This historic tall ship traveled 1.5 million miles around the globe, and once did duty as the mythical pirate ship in Peter Pan.

One of the oldest theaters in Australia, it's also said to be haunted by a performer who died on stage.

Unusual finds in this shrine to local law enforcement include a 19th-century vampire-slaying kit.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

The labyrinthine storm tunnels beneath the city of Melbourne are ruled by a band of urban explorers.

An abandoned jewel of a ballroom on the top floor of Australia’s busiest rail station echoes with the sounds of a bygone era.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

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

No need to strap in for a "ride" on this walkable roller coaster.

This painted Lego bridge is the product of over a century of locomotive history.

A medieval gate once used as a prison and how home to a city museum.