Born from the building redevelopment of a former slaughterhouse, the Citadel of youth is a space for socio-cultural aggregation in Alcamo. The architecture is characterized by the large continuous facades, more than 11 meters high, made with uprights and transoms. Sirio 50 curtain wall is one of the best energy efficiency and insulation systems in existence today. The doors for the emergency exits and the doors and windows were made with Armonia, a flagship for water tightness, air permeability and sound insulation in the ALsistem range of windows. The work is completed by the finish used for the aluminum profiles, RAL 9010 opaque, pure white, which gives the structure a modern aesthetic and great brightness. Last but not least is the high resistance.