The two metro stations, Airport T1 and Airport T2 on L9, linked to terminals T1 and T2 have the same formal and environmental characteristics, given their proximity to each other and their link with the Multimodal building, designed by the same authors. The basic characteristics of the public transport elements of the infrastructures are related to the clarity of flows and organisation. Airports, railways or metro stations must respond clearly and emphatically to the clarity of routes and functional rationality. In our case, the use of the same materials (aluminium, retro-projected walls, false ceilings, etc.) is intended to share the same linguistic code as the architectures that support them.