Organization of World Heritage Cities

The Organization of World Heritage Cities is an international non-profit, non-governmental organization of 250 cities in which sites of the UNESCO World Heritage list are located. It was founded in 1993 in Fez, Morocco, during the second International Symposium of World Heritage Cities. The headquarters of the OWHC are located in Quebec City, Quebec, Canada. Altogether the 250 member cities of the OWHC have a population of more than 130 million.

Source: Wikipedia