Right now the construction of the Bella Sky hotel in Copenhagen is the largest building site in Denmark, with work well on target for completion in 6 months time. Visually the hotel will be characterised by the two leaning towers, creating a spectacular and unspoiled view over the surrounding green meadows, the sea and the Copenhagen skyline. The two towers incline 15 degrees - by comparison the leaning tower in Pisa leans at an angle of 3.97 degrees - amounting to a staggering 20m slope difference between the ground and top floor. In order to accommodate such working conditions special fitters were trained to abseil down the building to mount the facade. The unique design creates diversity at almost every floor level and thereby challenges the scopes for conventional construction.