It's great news that Machu Picchu was listed as one of the 'New Seven Wonders of the World', but it has raised fears about its preservation in the face of the inevitable increase in visitors. It already suffers a real threat from damage to the citadel by tourists and the erosion of the surrounding ecosystem. UNESCO, which recognises Machu Picchu as a World Heritage Site, has already threatened to put the citadel on its 'at risk' list and is seeking a series of measures introduced to halt damage. Peru's National Institute of Culture (INC) also recognises the dangers of permanent damage to the site and is searching for a way to handle the increase in visitors numbers.

Report: Machu Picchu faces new threat