The first common workshop of the Cities.Building.Culture Project was hosted by RWTH Aachen on September 13-14, 2021. It represented the first opportunity for the project team members to meet each other in person and discuss the main research objectives, challenges and joint events planned for the following years. Most importantly, the two-days meeting was attended by the members of the Advisory Board: Dr. Thomas Flierl (Hermann Henselmann Foundation), Prof. Natalia Dushkina (ICOMOS Russia), Prof. Elena Trubina (Ural Federal University, Yekaterinburg), Prof. Jörg Haspel (ICOMOS Germany), Prof. Uwe Altrock (Kassel University), and Prof. John Pendlebury (Newcastle University), who provided feedback and addressed some of the key methodological questions proposed by the sub-projects.