Bordeaux is an international tourist destination for its architectural and cultural heritage with more than 350 historic monuments, making it, after Paris, the city with the most listed or registered monuments in France. The ""Pearl of Aquitaine"" has been voted European Destination of the year in a 2015 online poll. The metropolis has also received awards and rankings by international organizations such as in 1957, Bordeaux was awarded the Europe Prize for its efforts in transmitting the European ideal. And in June 2007, with more than 1,810 hectares, it is the largest protected city in the world, with the inscription of the Port of the Moon by the World Heritage Committee, designated by the UNESCO General Assembly, on the World Heritage List for its ensemble of cultural and natural properties of exceptional interest for the common heritage of humanity. Bordeaux is also ranked as a Sufficiency city by the Globalization and World Cities Research Network.