 Several of Rwanda's highest buildings, including the twenty-storey Kigali City Tower, are located in the CBD, as are the headquarters of the country's largest banks and businesses.Other buildings in the CBD include the upmarket Serena, Marriott and Mille Collines hotels, the University Teaching Hospital of Kigali, the national university's College of Science and Technology, and government buildings such as the National Bank of Rwanda and the Ministry of Finance and Economic Planning.To the south west of the CBD, and also on the Nyarugenge Hill, is the suburb of Nyamirambo.