Dublin- a city of individual houses - should have a roofscape of terraces, apartments and viewing platforms. In this project , five contiguous Protected Structures are converted to new uses for Dublin Dental School and Hospital,combining conservation with strong modern intervention into the fabric. The houses- a piece of city, archaeology and typology combined - will be upgraded, using voids and fireplaces for services, retaining doors and surfaces. The rooftop is transformed by the addition of zinc ‘pods’ containing a new library; lightwell ‘stalks’ are dropped through the fabric, forming niches and spaces around a corridor intervention linking the houses laterally.