Rebuilt remains of a temple to Roman god Mithras.

The beams of the New College, Oxford dining hall come with an amazing story.

The weathered grave of a medieval anchoress who walled herself up in a cell attached to a church.

Oxford University's stateliest library seems designed to make students truly feel the weight of knowledge.

One of Europe's oldest libraries.

Home to the most complete dodo remains known - one head, and one foot.

This network of narrow, medieval passages has the most delightful name.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

A winding medieval path was used by mourners to carry their dead to the nearest church.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

David Sedaris called it "The greatest shop in the world."

The oldest operating pharmacy in the world features 800-year-old recipes.

Water and windows define this defensive Italian well.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Lord Byron's embalmed body lies within this medieval church.

The ancestral home of beloved English poet Lord Byron has a bizarre history.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

One of England's most famous churches hides a pair of little known architectural treasures.

A perilous medieval road leading right into the sea.

This 15th century pub is one of only two pubs in England situated on consecrated ground.

The oldest inn in England served brew to the crusaders.

A preserved block of timber buildings from the city's industrial era in the Middle Ages.