Abuja (/əˈbuːdʒə/) is a city in Nigeria. It is the national capital of Nigeria. Around 2.5 million people live there. Abuja is in the middle of the country, in the center of the Federal Capital Territory, Nigeria. It replaced Lagos, the country's most populous city but very small in size, as the capital on 12 December 1991.
Abuja is a planned city, which means that architects designed it specifically to be Nigeria's capital city. Construction of the first parts of the city was finished in the late 1980s.