Joining the discussion is the originator of the ‘sponge city’ concept, an innovative approach to urban water management. They delve into the creation of age-friendly communities aimed at combating loneliness among the elderly and promoting interaction through carefully designed spaces. The guest also shares insights on child-friendly environments, showcasing Helsinki’s unique playground that blends learning with play. Additionally, they highlight the global adoption of the sponge city concept, illustrating successful projects in countries battling urban flooding.