Tourism consulting by Lonely Planet publication has listed the ten top tourist sites on the globe. The Aya Sofia in Istanbul is listed as tenth. The Alhambra in Spain goes a notch above. The Iguazu Falls in Brazil and the Colosseum in Rome complete the eighth and seventh spots respectively. The come the Grand Canyon National Park and the Taj Mahal in USA and India respectively. The Great Wall of China comes fourth. The mysterious Machu Picchu stands tall at third. Just one spot away from top lies the Great Barrier Reef in Australia. Right on top are the temples of Angkor Vat in Cambodia.