The Green Lung Garden dramatises how an urban environment can be transformed with plants, improving air quality as well as quality of life. The garden has two halves, each a mirror image of the other but with a striking contrast that gives the visitor entirely different experiences. 

On one side is a grey urban forecourt with paving, fountains and street furniture. The other side is lush with planting including living walls and green roofs. From one side visitors see grey, from the other a living green space. At a time of increasing concern about air pollution this garden indicates the power of plants to trap pollutants. It also encapsulates how plants can improve the environment, reduce flooding and support wildlife.

The planting includes those which are most effective at trapping pollutants, such as those with hairy, waxy or deep-veined leaves, as well as evergreens, which have an impact year round.