This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

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

This historic abandoned train station looks like a stop for ghost trains.

This amazing 15th-century mural remained hidden in plain sight for centuries.

Used as an example in one of the first dictionary entries for "museum" in 1706.

Putting the "mod" in "modular" since 2000.

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

Deep in the countryside lie the remains of one of the grandest Roman dwellings in Britain.

A unique tribute to the millions of animals who served and died for the British military.

A quiet memorial to those who died saving others in the heart of the City of London.

The commemorative stone column conceals a secret laboratory.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

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

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

These ornate arches show how the course of the River Thames has changed.

The fences outside some of South London's estates are made from recycled World War II stretchers.

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

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

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

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

Enter this small nook and you'll be surrounded by 360 degrees of street art.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

A sweet symbol marks the place where torturous executions were once carried out.