Ten years ago, on September 14, 2015, the first signal of gravitational waves was observed—faint ripples in the fabric of space-time predicted by Albert Einstein as early as 1916. Since then, the LIGO experiments in the United States and Virgo in Italy have detected over 200 such signals, produced during violent cosmic phenomena, marking the birth of a new discipline: gravitational astronomy. In the future, the number of these observations is expected to grow exponentially thanks to the Einstein Telescope (ET), the new gravitational wave observatory that will be built in Europe in the next decade, aiming to revolutionize our understanding of the universe. Among the candidate sites for ET is Sardinia, with the area of ​​Sos Enattos, in the province of Nuoro: a place with unique geological and scientific characteristics, ideal for hosting a research infrastructure of this scale. The conference will provide an opportunity to take stock of the current situation, both of the scientific activities already underway at the Sos Enattos site and the current status of the candidacy.