Lonely Planet reveals 'the world's greatest man-made and natural wonders'

These amazing structures and creations are every travel photographer’s dream, from the stunning Machu Pichu in Peru, and the Great Rift Valley in Africa, to the famous Giant’s Causeway in Northern Ireland. Now all of them are in one place, as travel bible Lonely Planet have brought together the 50 best sites from across the globe, in The World’s Great Wonders. Have a look at 20 of the best sites here.