The politician, writer, economist, and urban planning consultant Antoni Vives has lived for six and a half years in Saudi Arabia, at the service of Prince Mohammed Bin Salman (MBS), designing and promoting the construction of the linear city Neom, in the desert at the northern tip of the Arabian Peninsula, on the Red Sea coast; a unique commitment to sustainable modernity, conceived for architects and engineers as well as botanists. Civilization and nature: 170 km long, on paper it is designed to run on renewable energies and intended for 9 million inhabitants who will not need to use cars, with all personal and collective services within 5 minutes. It is the largest open-air construction project in the world. Will they succeed?