The open roof structure of the Schierker Feuerstein Arena in the northern Part of Germany not only offers protection against sun, snow and rain, but also adds a fascinating room to the unspoilt natural environment. Despite high snow loads of the popular winter sports region, the lightweight, cable supported membrane roof is mounted on two supports only, covering about 2 300 m² in a spectacular gesture. Similar to the pioneer roof in Wolfsburg, the planning team profited from an early collaboration between architects and engineers.