Abstract dinosaur models in London.

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

A collection dedicated to the treatment of disease, held in London's oldest hospital.

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

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

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

Rebuilt remains of a temple to Roman god Mithras.

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

The signs of a long buried road can still be found hidden beneath a London sewer grate.

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.

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

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

An unusual round church in London with a Templar past.

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

The anatomical-pathological collection of a man who changed surgery.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.