The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

Abandoned Nazi train station turned underground astroparticle laboratory.

A dormant lightning machine equal to all the power in Russia.

Living trees form the structure of an open-air palace.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

Murals of the wild parties once held on the frozen River Thames.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

An abandoned Indian-inspired mansion.

This former stomping grounds of the most eminent astronomers of the early 20th century.

A hands-off space for graffiti artists to hone and display their skills.

Hidden beneath the streets of London is a secret subway that only carried mail.

The largest of London's subterranean rivers and once a mad, bad center of London life.