UIA World Congress of Architects. Barcelona. UIA 2026: Roger Boltshauser with AAU Anastas 30.06.2026 UIA World Congress of Architects. Barcelona. UIA 2026: Roger Boltshauser with AAU Anastas Reinventing Stone: Ecological Continuities and Tectonic InventionBecoming Embodied Language: English Tuesday, June 30, 12:25h - 13:30hLocation: CCIB -Stage 4 Reinventing Stone: Ecological Continuities and Tectonic InventionBecoming Embodied Language: English Tuesday, June 30, 12:25h – 13:30hLocation: CCIB -Stage 4