Rarotonga was one of the last of the Cook Islands to be visited by European ships, but since its "discovery," it was always a favorite of sailors and merchants. Today, Rarotonga is the most populous island of the Cook Islands, and the location of the country's capital, Avarua. Isolated for years from major tourist routes, travelers began to arrive in Rarotonga following the opening of the international airport in 1974, many lured by the untouched beauty of pristine white sand beaches edged with swaying palms and crystal-clear lagoons.