Exponential population ageing is changing how we coexist in urban spaces. Improving discourse on “care” is high on the agenda in our globally ageing world. The task of densifying cities with hundreds of apartments in single buildings reminds us that we are responsible for incredibly sophisticated social structures. In designing these projects, de Architekten Cie. has accumulated significant experience, understanding the challenges on both architectural and urban scales, as well as their societal and emotional dimensions. ‘The Architecture of Ageing’ shares the experiences of their long-term collaborative project on housing, ageing, and care in the city.