Abuja is the capital and eighth most populous city of Nigeria. Situated in the middle of the country within the Federal Capital Territory (FCT), it is a planned city built mainly in the 1980s based on a master plan by International Planning Associates (IPA), a consortium of three American planning and architecture firms made up of Wallace, Roberts, McHarg & Todd as the lead, Archi systems International, and Planning Research Corporation. The Central Business District of Abuja was designed by Japanese architect Kenzo Tange. It replaced Lagos, the country's most populous city, as the capital on 12 December 1991.

Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea to the south in the Atlantic Ocean. It covers an area of 923,769 square kilometres (356,669 sq mi), and with a population of over 230 million, it is the most populous country in Africa, and the world's sixth-most populous country. Nigeria borders Niger in the north, Chad in the northeast, Cameroon in the east, and Benin in the west. Nigeria is a federal republic comprising 36 states and the Federal Capital Territory, where the capital, Abuja, is located. The largest city in Nigeria is Lagos, one of the largest metropolitan areas in the world and the largest in Africa.