The climatisation of the Corderie del Arsenale was a challenging task, given the fact that the open space once was instrumental for Venetians’ ship and rope production. Transsolar saw an oppourtunity in that difficult aspect, using the historic railroad tracks spanning throughout the 400m long Corderie as an underfloor plenum which supplied cold air into the space. “An idea of which we didn’t know until the end whether it would work or not”, they say. The rooftop, too, had to be closed off, to isolate the unique microclimate from the rest of the Arsenale. A stretch-ceiling made of a polymer membrane created an airtight seal for the exhibition space without penetrating the heritage’s protected structure. Even the ramp allowing visitors to wander through the cloud incorporated the columns of the Corderie, using them as load-bearing elements for the minimalistic steel beams with thicknesses of only a few centimetres that carried the entire load of the 10 ton structure.