Igor Bajena is an architect specialising in digital 3D reconstruction, documentation and visualisation of cultural heritage. He earned a MSc in architecture at Warsaw University of Technology in 2019. Since 2018, he has been researching at the Institute of Architecture at the Hochschule Mainz – University of Applied Sciences Mainz (AI MAINZ). In 2021, he started work on his PhD dissertation at the University of Bologna in cooperation with AI MAINZ on the topic of „Digital 3D-reconstruction as a research environment in art and architecture history – Infrastructure for documentation and publication“. Since 2022, he has been teaching as a guest tutor in digital reconstruction courses at the Hochschule Mainz, the Warsaw University of Technology, and the University of Bologna. His main areas of research include the lost architectural heritage of synagogues, the development of the SchUM cities of Speyer, Worms and Mainz, the use of additive manufacturing prints in disseminating reconstruction research, and methods for the documentation of digital reconstructions with particular emphasis on ontological approach and CIDOC CRM.