Heliopolis was a suburb outside Cairo, Egypt, which has since merged with Cairo as a district of the city and is one of the more affluent areas of Cairo. It was established in 1905 by the Heliopolis Oasis Company headed by the Belgian industrialist Édouard Empain and by Boghos Nubar, son of the Egyptian Prime Minister Nubar Pasha. It is the location of the Cairo International Airport. The population of Heliopolis is estimated at some 142,968 individuals.