Marrakesh comprises an old fortified city packed with vendors and their stalls. This medina quarter is a UNESCO World Heritage Site. Today it is one of the busiest cities in Africa and serves as a major economic center and tourist destination. Tourism is strongly advocated by the reigning Moroccan monarch, Mohammed VI, with the goal of doubling the number of tourists visiting Morocco to 20 million by 2020. Despite the economic recession, real estate and hotel development in Marrakesh have grown dramatically in the 21st century. Marrakesh is particularly popular with the French, and numerous French celebrities own property in the city.