How are we using (the mostly limited) space in our cities? How do we live together? Buildings are an integral part of cities’ identities, not to forget the spaces and places in between buildings. But how do we build? How to we deconstruct? How do we maintain and retrofit buildings, and how do we add in greenery to buildings, streets and places? How do we make places liveable? This is what this section is all about! Find out more about upgrading existing buildings, learn about sustainable building materials, dive into affordable housing, and make your city greener, plant by plant. Check out our glossary on everything sustainable building, and make your first step today!