A clock designed to run with perfect accuracy for 10,000 years.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

The final resting place to 300 Victorian-era pets hides inside the city park.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

London's smallest police station is barely the size of a phone booth.

A mysterious artist-run cabinet of curiosities and library.

Remnants of a Victorian garden feature sitting in public woodland.

A historic house left in "dramatic still life."

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

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

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.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

A wunderkammer of mysterious objects and stories.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

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