The majority of the museum's large collection is held in a storage space open to the public a few times a year.

A network of concealed passageways lies within a busy London Underground station.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

A museum of carnival attractions where you are invited to ride the rides.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

A wellspring of creativity in an already artsy East London neighborhood.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

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

Traveling collection of amazing automata.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

This cavernous swimming spot doubles as a home to the largest known colony of bats in Central Asia.

Started as a kitchen garden, now the second largest botanical garden in the world.

This isolated island is often capped by its own fluffy cloud.

This remote island village was in danger of depopulating completely until a tunnel was built to connect it to the rest of the world .

The university library shaped like a giant piece of Swiss cheese.

This sprawling market is a one-stop shop for traditional Kazakh foods, from mare’s milk to sheep’s head.

Lonely minaret stump of a destroyed city.

Medieval irrigation channels built into the sides of mountains provided Valais with water for hundreds of years.

This retro, UFO-like structure is a remnant of the Soviet-era circus.

The ruins of this mining boom town stand like skeletal reminders of the settlement's dark history.

The Avenue of Mausolea is a series of grand palatial tombs.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.