The island of Futuna is divided by the Vaigaifo River into two kingdoms, Sigave in the west and Alo (including the island of Alofi) in the east. Villages are located around the coastline of Futuna and linked by one road; there are no permanent inhabitants on Alofi. The main commercial and administrative center is in Leava in Sigave, but there are small shops and a church in each of the villages. Most of the houses are set on the inland side of the road, with their household garden plots behind the house. The oval-shaped thatched houses are surrounded by low concrete walls to keep the pigs from attacking the crops and have open sides, except for coconut-frond blinds that can be let down in bad weather. Most houses have very recently been wired for electricity and have outside piped water.