The Prime Minister of the Republic of Bulgaria Boyko Borisov and the accompanying delegation visited the National Museum at King Abdulaziz Historical Center in Riyadh yesterday. He was received by Prince Sultan bin Salman bin Abdulaziz, President of Saudi Commission for Tourism and National Heritage and a number of officials . The Prime Minister of Bulgaria expressed his admiration of Roads of Arabia Expo which reflects the historical position of the Kingdom and its successive civilizations, praising the experience of the Kingdom represented by Saudi Commission for Tourism and National Heritage in maintaining national antiquities.