Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

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

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

Scattered throughout London are ancient remnants of the city's former bounding wall.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A quiet memorial to those who died saving others in the heart of the City of London.

The curios of pharmacist and collector Henry Wellcome.

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

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

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

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

Giant, friendly pelicans in Central London, the most unlikely of places.

Eighty million natural history specimens call this gargantuan museum home.

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

Charles Babbage's proto-computer, painstakingly brought to life.

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

A naturally mummified 2,000-year-old man.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones’ locker.

The site where Poe “in great distress, and ... in need of immediate assistance” likely died.

It’s not hard to see why the historic Peabody Conservatory of Music’s library has been described as a “cathedral of books.”

A giant Australian fruit and tropical farm.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.