A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

A pair of gigantic baby heads greet passengers at Atocha Station.

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.

Vibrant paintings stretch across 600 feet of derelict railway.

This monument dedicated to the legendary American showman can be found in Scotland's largest city.

The community pools that the community refused to give up on.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

A scattered trail of street art adds a pop of color to the city's stark structures.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A once-fairy tale mansion now stands in a state of disrepair.

An abandoned quarry hides an open-air gallery of huge sculptures, some made from the rubble of 9/11.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.

In the depths of Glasgow Cathedral's crypt, one pillar stands out from all others.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

A burial vault located under Tiber Island in the middle of the Italian capital.

Named after the German word for "a longingness to travel," this park brings together thousands of city and street signs from around the world.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Eyam took steps to quarantine themselves and keep the plague from spreading.

An architectural gem nestled into a promontory overlooking a prehistoric landscape.

One of ancient Etruria's most spectacular archaeological sites with impressive necropolises and rugged landscape.