Abuja is the capital city of Nigeria, with an estimated population of 2.5 million.
The master plan for Abuja and the Federal Capital Territory was developed by IPA (International Planning Associates), a consortium made up of three American firms: PRC Corporation; Wallace, McHarg, Roberts and Todd; and, Archisystems, which was a division of the Hughes Organization.
The master plan for Abuja defined the general shape and major design elements of the city, however a refinement of this design was accomplished by Kenzo Tange, a renowned Japanese architect, along with his team of city planners at Kenzo Tange and Urtec company.
Nigeria shares a border with Benin in the west and Cameroon to its east.
Nigeria's widely varied topography consists of tropical swamp-like mangroves along coastal areas, with tropical rainforests extending 125–188 km (100–150 miles) inward, becoming a savannah and wooded plateau and a semidesert in the northern region of the country.
Nigeria's diverse ethnic, linguistic, and religious characteristics contribute to cultural and artistic enrichment and fractious political conditions.