Aruba is one of the four countries that form the Kingdom of the Netherlands, along with the Netherlands, Curaçao, and Sint Maarten; the citizens of these countries are all Dutch nationals. Aruba has no administrative subdivisions, but, for census purposes, is divided into eight regions. Its capital is Oranjestad. Unlike much of the Caribbean region, Aruba has a dry climate and an arid, cactus-strewn landscape. This climate has helped tourism as visitors to the island can reliably expect warm, sunny weather. It lies outside Hurricane Alley. Aruba's first inhabitants are thought to have been Caquetío Amerindians from the Arawak tribe, who migrated there from Venezuela to escape attacks by the Caribs. The Netherlands seized Aruba from Spain in 1636 in the course of the Thirty Years' War. Since 1636, Aruba has been under Dutch administration.