The latest Maggie’s center at The Royal Marsden hospital by Ab Rogers Design valiantly reflects the belief of founders Maggie and Charles Jencks in the power of the environment to heal. As the late Charles Jencks said, Maggie’s centres are built from the ‘Architecture of hope’. Articulating this, ARD’s building has been designed from inside to out, conceived as a place where design acts as the third carer. By giving visitors spaces where they can hide in peace or laugh with a group, bathing them in light and engaging them with warm colours and rich textures, the building supports them to feel well. Here Ab Rogers reflects on the 12 principles that inform his life-affirming design.