The Great Fire of London and the regulation of one-way streets both started in this alley.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

This pub boasts a curious history and may have inspired a Dickens character.

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

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

Pop culture has helped to keep this iconic British building from being destroyed.

A student driver's nightmare.

This striking statue brings a scene from the African savannah into central London.

This Underground station has been a popular filming location for decades, even before it closed.

Tourists who rely on a transit map to find the iconic Beatles location often end up in a far-off neighborhood.

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

Hear the quietest sound from across the dome.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.