World Network Biosphere Reserve

…Dry Tortugas National Park) a Biosphere Reserve in 1976 and a World Heritage site in 1979. The park’s area has been expanded several times, most recently in 1989. It encompasses 2,357 square miles (6,105 square km), including most of Florida Bay, and preserves a unique blend of temperate and tropical…

…park was designated a UNESCO World Network Biosphere Reserve in 1977.

…and it was designated a UNESCO World Network Biosphere Reserve in 1980.

…the park was designated a biosphere reserve by UNESCO.

…1937, it was designated a biosphere reserve by UNESCO in 1976. The monument, with an area of 517 square miles (1,339 square km), preserves segments of the rugged Sonoran Desert. It is named for the organ-pipe cactus (Stenocereus thurberi), which is found in large stands in the United States only…

UNESCO designated Tonle Sap a World Network Biosphere Reserve in 1997.

…park was designated a UNESCO World Network Biosphere Reserve in 1983.