Lagos is a busy and overcrowded city, reputed to be the most expensive in the world. Its commercial and administrative center is on Lagos Island at the heart of the city, linked to the mainland by two road bridges. Ikoyi and Victoria islands are also connected to Lagos Island, and both have wealthy residential areas and beautiful gardens. The National Museum at Onikan on Lagos Island houses numerous exhibits of Nigeria’s ancient civilizations and has a craft center which sells examples of Nigerian craft at fixed prices. In the Jankara Market on Lagos Island you can bargain for locally dyed cotton and handwoven cloth, herbs and leather goods.