Hidden Florence 3D: San Pier Maggiore is the result of a collaborative research project led by Fabrizio Nevola (University of Exeter), with Donal Cooper (University of Cambridge) and Nicholas Terpstra (University of Toronto). The app and project have been made possible with support from the Getty Foundation, through its Digital Art History initiative; additional support was provided from the University of Exeter and the Arts and Humanities Research Council, UK. Hidden Florence 3D: San Pier Maggiore is the result of a collaborative research project led by Fabrizio Nevola (University of Exeter), with Donal Cooper (University of Cambridge) and Nicholas Terpstra (University of Toronto). The app and project have been made possible with support from the Getty Foundation, through its Digital Art History initiative; additional support was provided from the University of Exeter and the Arts and Humanities Research Council, UK.