A Roman spa buried deep beneath the City of London.

The city of Manchester quietly unveiled this tribute to a 19th-century massacre.

Once used to protect important Roman trade routes.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

This nondescript building hides an entrance to an underground nuclear tunnel system.

In this scale model, our neighboring planets are represented by metal spheres spread across an English village. The nearest stars are represented by spheres in California and Australia.

From amidst her whirling waves, this mermaid sees all who pass through St. Swithun’s Church. If local legends are to be believed, she serves as a warning.

It's believed King John of England stayed at this 13th-century castle before riding off to sign the Magna Carta.

According to the Soldiers Account Book, the village of Odiham is home to Thomas Atkins, whose name became shorthand for all British soldiers.

The remains of the man who founded Pennsylvania lie in an unassuming grave in the English countryside.

17th-century tradition of public weighing is met with boos or cheers depending on the Mayor's weight.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

What started as a way to address damp basement walls turned into a house filled with intricate hand-carved designs.

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

This suburban British town holds secrets that would have made the druids proud.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

Ask nicely, and stewards of a centuries-old charitable tradition will give you free bread and beer.

This gravestone and its inscription inspired a movement that has spanned generations and saved countless lives.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

The Egyptian-inspired last resting place of Lord Kilmorey.