Situated along the Swiss Alps in the Toggenburg region, the Zero Real Estate pop-up hotel is as close to nature as it gets. The three open-air suites are nothing more than a double bed and two nightstands sitting on a wooden platform. Free off walls and roofs, the rooms are subject to sweeping views of the landscape including the Churfirsten mountain range, the Schwendi lakes, and the Rhine Valley. Fall asleep under the stars and get woken up by the sunrise for breakfast in bed. Each package comes with a one night stay, a backup room with for bad weather, and a butler. Reservations are being taken until September 1, 2018.