The Unesco World Heritage site Stonehenge is 'a destination in trouble', a new survey has found. The National Geographic Traveler magazine marked the site 56 out of 100 against criteria including historic preservation and tourism management. Survey panellists said Stonehenge was a 'mess', 'over-loved' and 'crowded'. English Heritage, which looks after the site, said it was "actively seeking to revamp its visitor facilities" and improve the nearby A303 road.