The Main Hall of Building C11 was officially named after Giacomo Costa, a leading figure in the Trieste chemistry scene who passed away in 2015. Costa, who was born in Trieste in 1922 and graduated in Chemistry from Milan, was instrumental in the development of chemistry at the University of Trieste. He held a number of prestigious positions: he was Head of the Institute of Chemistry from 1963 to 1973 and, subsequently, Dean of the Faculty of Mathematics, Physics and Science for about twenty years, from 1973 to 1991. His research activities focused on the metal-organic compounds of cobalt, known as ‘Costa's Models’, relevant to the study of Vitamin B12, which remains an active field of research at the University. 

Convinced of the importance of scientific rigour in addressing issues of public interest, he actively participated in technical roundtables on environmental and industrial issues in Trieste, making his expertise available to the community. He reached the pinnacle of his career in 2003 when he was awarded the ‘Amedeo Avogadro’ gold medal for scientific merit.

The naming ceremony saw the institutional greetings of Barbara Milani, Deputy Rector for International Relations and Mobility, Paolo Tecilla, Head of the Department of Chemical and Pharmaceutical Sciences, and Rinaldo Rui, the last Dean of the Faculty of Mathematics, Physics and Science. Following this, Giovanna Fronzoni paid tribute the figure of Professor Costa, while the commemorative plaque was unveiled by Giovanni Costa, Domenico's son and Associate Professor of Solid Earth Geophysics. The event concluded with a seminar by Yusuke Morisawa, Visiting Professor in occasion of the 100th Anniversary of UniTS and Associate Professor in the Department of Science and Engineering at Kindai University.