Darmstadt/Ravensburg. The new Museum of Arts in Ravensburg, Germany, not only showcases important works of art – the building itself is a masterpiece worth seeing: the first museum in the world built to the Passive House Standard. The inauguration ceremony, held on the second weekend in March 2013, celebrated not just a new meeting point for art lovers in the historical city centre, but also marked a highlight in energy-efficient construction.