On February 16, 2006, in Brussels, the participation of Greece in the Intergovernmental Initiative of the UN GEO (Group on Earth Observation) was announced, following the decision of the Greek General Secretariat of Research and Technology (GSRT). GSRT and its supervised entity, the National Observatory of Athens (NOA), established the Greek GEO Office (GGO), to be hosted by NOA, as the main representative of Greece in GEO and as the focal point for EO at the national level, to coordinate GEO relevant activities. GGO is currently one of the few national Offices in the world.
GGO functions since the beginning of 2007 and its operation focuses on the effective participation of Greece in the national, regional, and global activities, under the framework of GEO and GEOSS. In recognition of the substantial role that the Office needed to play in the upcoming years, Greece proceeded with a substantial restructuring of the GGO and its role, in May 2014. Since then, GGO has been active in several GEO working groups, organization of regional workshops, representation of Greece in international fora and participation in regional initiatives and projects, undertaking significant coordination and liaison roles.