After the big anniversary show last year under the motto "D'OHA moved" it is also at the 51st Edition of the fair tradition Thun refreshing to and fro: "The OHA refreshes" - this year's OHA-topic will not let anyone cool. The main attraction is the special "Ice World": On 250 square meters, ice and light together in perfection. For this show to give the Dutch sand artist making a comeback: 2006 inspired the builders van de Sand Sculpture Vlag at the OHA with the Thun Castle Hill in XXL format, the audience. This year, set the "Oranje" not on sand but on ice - and pimples for ten days together, the largest city of ice exhibition in Switzerland. At temperatures around minus four degrees is a small town with a village square and village well - built, including bakery, hairdresser and butcher. About 35 tons of ice will be used by Jeroen van de Vlag and his team. So everything is energy efficient as possible on the OHA-stage, the basement of Hall 1 is converted into a cold room. The specially built for the special exhibition room is cooled with water and solar energy. With the cooling water is then also the pool area at the OHA Beach heated.