A painfully obvious spy house sits right across the street from the Russian Embassy.

This sanctuary is home to donkeys who finally get to rest after a life of toil.

Local arts organization founded in a former church.

This Underground station has been a popular filming location for decades, even before it closed.

This may be the last of London's wooden pavements, which were once a common sight in the city.

Historic cuisine meets fine dining in a hotel-restaurant overlooking Hyde Park.

London's amazing modernist public square that never was.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

The Tudor-style cottage in the middle of the square is not quite what it seems.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

The site where the famous city gate once stood, now in the middle of a playground.

More than 300 years old, Kyoto's historic "teahouse" still operates as an invitation-only geisha club.

One of the few surviving World War II-era air-raid shelters in Tokyo.

Although it has never been a secret ninja base, this shrine still has plenty of tricks up its sleeve.

The largest archaeological site from the Yayoi period.

One in a pair of subterranean caves created by an ancient eruption of Mount Fuji.

According to one legend, this bridge was crafted after monkeys formed a body-bridge across the gorge.

Designed by a computer, this intricate network of fluorescent green pipes has taken over a subway station.

Tragic reminders of the 1945 firebombing campaign over Tokyo still haunt this bridge.

An enormous pair of straw sandals woven in the traditional way—to keep demons at bay.

A bovine sumo match in which both bulls live to fight another day.

A rare example of an ancient Japanese hill castle believed to be the fortress of a legendary demon.

A 17th-century Shinto shrine that is home to statues of Mickey Mouse and Pikachu.