These little castles each held thousands of pigeons.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

The hottest, driest, and most scenic desert on Earth.

Hundreds of stones dangle from barren trees in the middle of the desert.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.