Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

This historic spot was where America's involvement in the Vietnam War officially came to an end.

One man's remarkable private collection of art from around the world.

An early 20th-century bullring converted into a modern shopping center.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The television series' iconic giant foot was borrowed from this classical painting.

The tallest freestanding structure in the United Kingdom.

This plaque commemorates an amazing 19th-century sea rescue.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

The oldest inn in England served brew to the crusaders.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

One of the shortest streets in York has an especially odd name.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

This disused Cold War bunker has been restored to all of its early 60s glory.

Follow the original medieval paths that wind through this intriguing section of the city.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

A hands-off space for graffiti artists to hone and display their skills.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.