Mary Kelly was last seen here before she was murdered by Jack the Ripper.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

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

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

Spend the night in this formerly abandoned traditional Scottish village.

World's largest working waterwheel has been around for over 150 years.

This quaint funicular has been ferrying people up and down an English valley since the Victorian era.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

The narrowest street in Paris.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

The final resting place of the great navigator, or maybe his brother.

The world's largest wooden structure.

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Giant topiary dog once played a role in a terrorist bomb plot.

This 19th-century fountain's namesake animal isn't what you think it is.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.