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

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

It's a mystery why these remains were found with no traces of their bodies in sight.

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

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

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

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

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.

Home of one of history's most famous cartoonists just as he left it.

This inn of the court provides a fascinating window into London’s legal and architectural history.

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

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

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

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

These Victorian era devil sculptures were designed to spite a local vicar.

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

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Catacombs turned marketplace.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.