Hawaii is the USA state, and is the only U.S. state made up entirely of islands., more precisely – on the Hawaii Archipelago, in the north-central part of the Pacific Ocean. Honolulu, which is located on the O’ahu island, is the capital of Hawaii. The Hawaiian Archipelago extends for almost 2,5 thousand km and consists of 137 islands (8 of which are inhabited). The Hawaii Islands are of volcanic origin. Hawaii has the fourth longest coastline in the USA, after Alaska, Florida and California. Hawaii is visited by millions of tourists annually.