This Roman amphitheater is said to be King Arthur's legendary Round Table.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

This ancient Egyptian obelisk still bears the wounds of World War I.

The medieval woodcut-style artwork chronicles life in medieval London.

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

Its collection includes a broad array of social, geographic, graphic design, and political history.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

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

An architectural oddity hides in plain sight on this iconic London bridge.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

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

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

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

London's smallest police station is barely the size of a phone booth.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

One of the shortest streets in York has an especially odd name.

Follow the original medieval paths that wind through this intriguing section of the city.

It's possible to walk inside one of the largest Neolithic tombs in Britain.