Tourism in Mali is not well developed. Due to issues with infrastructure, tourism had been slow to grow but had seen improvements prior to the 2002 Africa Cup of Nations. However, due to the Northern Mali conflict and threats from terrorism, all major tour operators have withdrawn services which saw a decrease in tourists from 200,000 in 2011 to 10,000 the following year. The nation has four UNESCO World Heritage Sites, including Timbuktu.