Saudi Arabia raises a veil of secrecy over the project of the exhibition hall on Expo-2020

Saudi Arabia at World Fair "Expo" Expo-2020 in Emirate of Dubai was among pavilion of the most eco-friendly projects in the world, having received the platinum certificate of LEED of Council for ecological construction United States of America (USGBC) and became second-large after pavilion of United Arab Emirates, the countries organizers, three times popad in the Guinness Book of Records...