Turquoise waters and white sand beach in front of Fort Jefferson, Dry Tortugas National Park, Florida Keys, Florida, United States of America, North America

travel destination photography horizontal colour image turquoise water white sand beach fort jefferson dry tortugas national park florida keys florida united states of america north america day building exterior architecture outdoors fortress fortification 19th century old history the past sky sea blue local landmark no people shallow national park american culture coastline usa us united states american north american colour color image color outside travel destinations travel architectural nobody no one no one historical historic heritage cultural culture typically american traditional culture tradition traditional traditionally american