A small alleyway lined with locally drawn scenes of nostalgic anime and cartoon characters.

These charming mailboxes became social media stars after a typhoon failed to topple them.

Take a cruise with no movement but plenty of style in this one-of-a-kind boat mall.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

Two cannon-like cranes were installed on top of the bank building to fend off bad feng shui.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

A luxury hotel housed in a former 15th century Gothic church.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

The 20-mile causeway that separates the Netherlands from the sea.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A public urinal so pretty, it was declared a national monument.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

Amsterdam's former hotspot for public executions and dissections.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

The Netherlands' first car tunnel has an unusually rectangular shape.