"ExMacello", former slaughterhouse complex in Italy, sits in the Calvairate district on the east edge of the city of Milan. The area was built at the beginning of the 20th century but, due to a progressive abandonment started in the 90's, it's currently in a state of ruin and decay. Nevertheless, the area is still populated by buildings of strong architectural, industrial and historical value. Therefore, ExMacello has been selected as one of the main sites for Reinventing Cities, a competition with the aim to regenerate and provide new visions for abandoned parts of the city. In collaboration with the developer REDO and several Italian practices and partners, Snøhetta’s proposal, Aria, won the competition in July 2021.