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
Nairobi the Norfolk Hotel. Other newer ones include the Crowne Plaza Hotel Nairobi in Upper Hill area, the Sankara Nairobi in Westlands, Tribe Hotel-Village Market, House of Wayne, The Eastland Hotel, Ole Sereni, and The Boma located along Mombasa Highway. International chains apart from the Hilton, the Intercontinental group, and Serena Hotels are also setting up properties in Nairobi city. Upcoming establishments include Radisson Blu and the upscale boutique Bidwood Suite Hotel in Westlands, which are nearing completion. The Best Western Premier-Nairobi and The Villa Rosa Kempinski have been completed and opened. Nairobi is also home to the largest ice rink