Lagos mainly a collection of islands that are separated from each other by creeks of varying sizes and are connected together by bridges. The smaller sections of some creeks have been dredged and built over. This part of Lagos is the area where most business activities and entertainment events in Lagos takes place. It also houses most of the upscale residential areas in Lagos. The Local Government areas that are considered to be in the Island include Lagos Island, Amuwo-Odofin, Apapa (sometimes also regarded as being on the mainland), and Eti-Osa. The major upscale island neighbourhoods within these LGAs include Ikoyi
Lagos Island part of Lagos. Most Nigerian banks' head offices are located on Lagos Island. First Bank of Nigeria is one of the Nigerian banks with its head office in Marina, Lagos Island. Another bank that has its head office situated in Lagos Island is United Bank for Africa (UBA). Other medium and large-scale businesses such as real estate consultancy firms, electrical appliances manufacturers and retail stores are based in Marina, Lagos Island. Located on Nnamdi Azikiwe Street, Idumota, formerly Victoria St, Tom Jones Memorial hall is noteworthy as the venue of the call for positive action by zikists in November 1948.