Orthophotos for the whole of Greece

The online service offers viewing services on orthophotos with GSD 50cm for the whole country and fully orthoreduced orthophotos with GSD 20cm for urban / built-up areas of the country. Access is via WMS (Web Map Service) server (link: http://gis.ktimanet.gr/wms/wmsopen/wmsserver.aspx?).