Copenhagen's skyline has an impressive new addition in the jagged shape of Bella Sky Comwell. The two towers were created by local practice 3XN Architects and are marked by a triangular-patterned façade designed to insulate solar heat and maximise energy efficiency. The two volumes lean away from each other to allow for the best views. Bella Sky might be a big hotel to furnish - it is the largest in the Nordic region, with 814 rooms - but the owners haven't scrimped on quality. Spread through the hotel is furniture by the likes of Arne Jacobsen, Finn Juhl and Hay, while bathrobes and slippers are by Danish fashion designer Camilla Staerk.