This Calatrava sculptural Entrance gate will be a symbol of fluidity, transparency and movement of the city of Astara for the visitors who enter the city by car. Astara is a free trade zone in Iran with over 30000 visitors per month. The unique and striking design will help to create a strong image for the groing economy of Astara. with its 30 meters height the entrance gate will be first modern city entrance gate in iran. The idea is that the structure feels ethereal, almost flying in the sky, like a bird or a plane. this architectural exploration will fuse engineering and art, and result in impressive structure that is honest in revealing the forces at play.