Curious cave that stays a cool 56 degrees all year long.

Less a museum than a bizarre fantasy world created by artists and engineers.

Floating pink tap installed for a flower show in London.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

A historic arboretum and non-conformist, non-denominational park cemetery.

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

The monster at the center of the Darwin Center Spirit Collection.

This small collection of rare books was uniquely locked up for safe keeping.

The remains of Crystal Palace Great Exhibition of 1851.

A plaque marks the underground site of one of London's "lost rivers."

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

The remains of the great moral philosopher reside in a university in London.

This London plaque marks the spot where David Bowie's famous alien made his debut.

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

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

Artists and musicians now rule over this former rail station.

The last four extravagant street signs of London's historic banking street.

A museum wholly devoted to juvenescence.

This South London cemetery holds the remains of more than 15,000 people.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.