The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

This underpass became an unlikely piece of cinematic history after its appearance in 'A Clockwork Orange.'

Feast on Middle Eastern mezze from an Israeli expat duo.

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

A small museum that celebrates the history and culture of the LGBTQ community in England.

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

This life-size monument honors the legacy of a famous literary feline.

At almost 1,000 years old, this is the oldest known door in all of Britain.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

It’s fun to stay at the YMCA… but at this London outpost, it’s even more fun to eat the Bombay aloo.

Two tombstones associated with the much-beloved children's story.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

The world's longest continuously running show has played at this small West End theater since 1974.

A memorial for public executions that dates back to the 14th century.

This statue includes the molehill that toppled a king.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

This sprawling Jewish cemetery is one of the largest in Europe.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

For more than 170 years, this family-run bakery has been serving Berlin’s best Baumkuchen, or “tree cake.”

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

The world's first motorway was used as a racetrack until the late 1990s.

You've probably seen these distinctive orange-tiled columns on the big screen.

The oldest statue in the Netherlands has survived relocation, bombardment, and burial.