Perhaps a surprise to many westerners, Lagos – the capital of Nigeria – is quickly approaching a population of 20 million, making this creation of African architecture a global megacity. The main challenge the Eko Atlantic project tackles is the erosion of land outside Lagos by the Atlantic Ocean that is quickly encroaching the financial centre known as Victoria Island. The project of African architecture was launched in 2003, and continues to bring together private individuals and corporations in investing in transforming land lost to the sea into a bustling, ocean-front city. This project will also have the added bonus of relieving land pressure through land reclaimed from the encroaching sea, whilst an attached project made from 100,000 concrete blocks will form a barrier that will calm the power of the waves and provide the first-line of sea defence that will prevent further erosion of land. This sea defence project in African architecture is named the Great Wall of Lagos. The scale of this project is quite staggering: The entire urban development project will create a district the size of Manhattan in New York City that will become the economic and financial centre of Nigeria, and quite possibly the whole of West Africa by 2020. The ten-kilometre project of African architecture will have waterfront areas, green spaces, tree-lined streets, an efficient transport system, and mixed-use land plots that will mix residential areas housing an estimated 250,000 people, and commercial plots with leisure facilities, offices, and shops which will employ an estimated 150,000 workers.