The famed Galapagos Islands of Ecuador are truly a sight to behold. Home to a number of rare plants and animals that live nowhere else on the planet, the islands were declared a World Heritage site in 1978 and a Biosphere Reserve in 1985. It was here after witnessing the amazing behaviours of such unworldly creatures as the salt-snorting iguanas, giant tortoises and blue-footed boobies that Charles Darwin developed his theory of evolution by natural section. There are nineteen islands in total but only a select few are accessible for tourists. The main ones include Santa Cruz, Isabella, San Cristobal, Fernandina and Santiago.