A richly illustrated guide to 40 of the greatest natural world heritage sites. In 1972 an agreement was signed by 145 countries to protect those places of natural or cultural interest which the UN Educational, Scientific and Cultural Organization had deemed to be sites of World Heritage. Some 167 of these sites are classified as areas of natural heritage. Our Magnificent Wilderness takes us on a journey to some of these most awe-inspiring places on the planet - from the peaks of Kilimanjaro to the tropical dry forests of Costa Rica.