Nairobi to Pumwani Division in terms of boundaries. Nairobi is divided into seventeen constituencies and eighty five wards, mostly named after residential estates. Kibera Division, for example, includes Kibera (Kenya's largest slum) as well as affluent estates of Karen and Langata. Nairobi is home to the Nairobi Securities Exchange (NSE), one of Africa's largest. The NSE was officially recognised as an overseas stock exchange by the London Stock Exchange in 1953. The exchange is Africa's 4th largest in terms of trading volumes, and 5th largest in terms of Market Capitalization as a percentage of GDP. Nairobi is the regional headquarters of
Cathedral Basilica of the Holy Family, Nairobi administrative building for the archbishop's office was being built by the Chinese construction company Zhongxing Construction in 2011. The cathedral is the headquarters of the Archdiocese of Nairobi. The current archbishop is John Njue who was made a Cardinal in 2007. The Archdiocese of Nairobi contains an estimated population of 4 million people of which 1.6 million are thought to be Catholic. These 4,000 Christian communities are served by 182 clergy, eight university level education facilities and several places for retreat. Services are available through-out the week within the Cathedral and one of the chapels is always open. In addition