Our group participated in the International Solvothermal and Hydrothermal Association Conference (ISHA 2023), which took place in Valladolid, Spain. We presented our latest results in the field of hydrothermal synthesis with 9 contributed talks (by Alonso, Celine, Fabián, Florian, Frank, Lukas, Olivier, Robert, and Tobias, respectively), one poster (by Lisa) and Miriam’s plenary lecture. We thank the organizers for bringing together such an interesting and inspiring event.