In the days before house numbers, these colorful signs held clues about various buildings' purposes.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

This basement museum explores the art and artistry of fascism.

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

A Swiss amusement park entirely dedicated to the theory of ancient astronauts.

The immortal Hollywood star rests in peace in an unassuming Swiss village cemetery.

Museum featuring strange and enchanting toys of the past.

The Swiss hilltop housed an early 20th-century vegetarian nudist colony.

A Swiss board game museum housed inside a picture-perfect castle.

Swiss vineyards in a UNESCO heritage site.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

The steepest classic funicular in the world glides along a dizzying incline.