The dedication ceremony for the second-generation European gravitational interferometer was held on Monday the 20th of February 2017. The ceremony took place at the European Gravitational Observatory (EGO) in Cascina PI, Italy, the site at which Advanced Virgo is located. The ceremony took place in the presence of the presidents of the institutions that have funded the project (INFN, IN2P3, Nikhef) and of representatives of the governments of the six nations whose laboratories are members of the Virgo Collaboration.