[3] The architect Manuel de las Casas won the preliminary design competition for the construction of the convention centre, the resolution of which was announced on 2 November 1991.

The palace was inaugurated on 20 September 1997, with the exhibition The Neutrality of the Order by Manuel de las Casas and a concert by mezzo-soprano Teresa Berganza and the Royal Galician Philharmonic conducted by Maximino Zumalave.

The most characteristic aspect of the exterior of the palace are the green slate slabs, corten steel, copper and glass which, together with the harmonious ensemble of the building's volumes, such as the cube of the exhibition hall, favour its integration into the surrounding landscape and greenery.

[8] Manuel de las Casas organises the terrain by designing artificial platforms, squares and stone terraces that overlook the ria, the Lérez and the city.

The complex is composed of pure volumes with a cylinder for the Auditorium and two prisms on different floors, housing a large exhibition hall, the Convention Centre, a restaurant and a cafeteria.