One of the goals of the “green transition” project is to give the new T4 Changi Terminal a remarkable landscape identity in direct relation to water. One cannot ignore the strong bond that connects Singapore and nature, and particular to this is the importance of greenery and water in its landscape. When arriving in Singapore, the first perception one has of the city is it being an inspirational combination of green and water. The design, both interior and exterior, is to be based on these two natural key elements. The green aspect is already part of the Changi Airport experience and clearly announces the fact that Singapore is to be seen as a real “garden city”. Our proposal comes in continuity to this, bringing a green design philosophy to the new terminal. The greenery of the “green transition” project is focused upon two main locations: first is the main façade of the terminal, at the drop-off entrance. This is composed of a vertical hanging garden that speaks of the city’s tropical climate and gives a strong and welcoming identity to the T4 terminal. Second is within the “green borders”, placed in the center of the plan, between the check-in and departure areas, and between the arrival zone and departure area. This signifies to all visitors the green essence of the city, and provides a “green border” through which they have to pass as they enter or exit. Singapore is at heart a tropical green location and we believe this should be defined by the boundary through which passengers will pass moving from the land to air. This project brings three green worlds to the experience of one airport. By creating Singapore’s “green border”, passengers will have the unique experience of entering or leaving “green Singapore”.