Guided tours of the headquarters of the Rouen Normandy Metropolis by a tour guide. This building designed by the internationally renowned architect Jacques Ferrier, is emblematic by its architecture and precursor in sustainable development. The remarkable character of this equipment is expressed in many ways: in the exemplarity of its very high environmental and energy performance (passive and positive energy building, producing as much energy as it consumes), its minimal ecological footprint and the integration of innovative technologies in its design and construction.