Building collapses have become a major menace in Lagos, Nigeria. Lagos is the business hub of the country and has its largest seaport and airport. With an estimated population of 15.4 million, it is the largest city in sub-Saharan Africa and the second largest in Africa after Cairo.
The city has two distinct geographical areas: Lagos Island and Lagos Mainland, connected by three bridges. Lagos Island is the historical nucleus of the city. This area is renowned for its eclectic mix of architectural styles, a blend of modern skyscrapers, remnants of colonial-era structures and bustling traditional markets. It serves as the centre of the city’s financial, entertainment and corporate activities. Ikoyi, Victoria Island and Lekki are popularly regarded as an extension of Lagos Island.
Lagos Mainland has residential areas, markets and industrial zones.