The mayor of Tarragona, Rubén Viñuales, highlighted the importance of institutional cooperation for preserving historical and cultural heritage during a reception at the El Pardo Palace in Madrid. The event brought together mayors from Spanish cities recognized by UNESCO as World Heritage sites.

The Group's president and mayor of Segovia, José Mazarías, underscored the historical ties shared by these cities, defining them as municipalities with "the indelible mark of a common history".

Viñuales argued that historical heritage "today more than ever requires institutional cooperation, public commitment, and a shared strategy". He emphasized that being part of the Group allows for "pooling efforts, experiences, and strengthening the cultural projection" of these spaces of "universal value", assuring that Tarragona will continue working on conservation as an element of cohesion and development.

During the meeting, future projects were also discussed, such as the First Ibero-American Meeting of World Heritage Cities, scheduled for March 2027 in Cáceres. This event will gather 64 cities to create a network for exchange and coordination in heritage management, with Spain playing a leading cultural role.

Upcoming commemorations were also recalled, including the 40th anniversary of the declaration of Toledo and Cáceres as World Heritage sites in 2026, and the 30th anniversary of Cuenca. The Group, established in 1993, aims to act jointly in the defense and promotion of heritage.