Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

Hidden in plain sight, this creepy sculpture watches from above.

This centuries-old pub boasts a collection of more than 4,500 snippets of neckties from around the world.

Discovered on a shipwreck after more than 400 years, this Renaissance ratter tells a very waggly tale.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

The breadfruit-adorned final resting place of the infamous Captain of the HMS Bounty.

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

A faded reminder of what was once a common sight in London during the Blitz.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

This mysterious and unique painting is filled with symbolism.

A haunting painting meant to capture the calamity of World War I.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

Rebuilt remains of a temple to Roman god Mithras.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

A secluded green oasis amidst the towering skyscrapers, bears an unusual moniker that reflects one of the city's oldest guilds.

A tribute to all the green-thumbed workers who tend London’s public parks and gardens.

What might be the oldest living tree in London has survived fires, bombings, and estate agents.