Yes, Zurich Airport (ZRH) is widely regarded as one of the best and safest airports in the world for an overnight stay. The terminal remains open 24 hours a day, and security generally permits travelers to rest in the public areas as long as they have a valid boarding pass or a reason for being there, such as a very early flight or a long layover. For those seeking actual sleep, the "Alpine Garden" capsule hotel located in the landside area provides high-tech, soundproof sleeping pods. Airside (past security), there is a Transit Hotel near the gates that offers day-rooms and "rest zones" with recliners. If you prefer to sleep in the open terminal, the "Airside Center" features comfortable, carpeted areas and quiet corners. While the airport is very quiet at night, lights remain on and cleaning crews operate, so an eye mask and earplugs are highly recommended for anyone planning to catch a few hours of rest on the benches.