Null Stern's hotel with no walls allows panoramic views of the Swiss Alps
Guests are invited to sleep under the stars in this open-air hotel, which is located 6,463 feet above sea level in the mountains of Graubünden (+ slideshow). More
Guests are invited to sleep under the stars in this open-air hotel, which is located 6,463 feet above sea level in the mountains of Graubünden (+ slideshow). More