Through a competition in 2008 that Tierra was invited to participate in, Changi Airport’s Terminal 3 design that emphasizes Singapore's identity to the world as a “City in a Garden” was conceptualised and realised. This approach to greening while conserving floor space directed the design to take on the form of vertical gardens, making the terminal the first of its kind in the world.
The vertical green garden is equivalent to a five-storey-high structure in height. The softscape comprises of vines and epiphytes that when add up, run the length of three football fields. Amongst the green, water cascades down 20m-high laminated walls of shredded glass laminated stainless steel. More than 10,000 tropical plants are showcased across the entire green wall tapestry. Catwalks behind the green wall allow for easy, safe and unobtrusive maintenance of plants.