Alongside the capital, the most popular tourist destinations are Isfahan, Mashhad, and Shiraz. In the early 2000s, the industry faced serious limitations in infrastructure, communications, industry standards, and personnel training. The majority of the 300,000 travel visas granted in 2003 were obtained by Asian Muslims, who presumably intended to visit pilgrimage sites in Mashhad and Qom. Several organized tours from Germany, France, and other European countries come to Iran annually to visit archaeological sites and monuments. In 2003, Iran ranked 68th in tourism revenues worldwide. According to the UNESCO and the deputy head of research for Iran's Tourism Organization, Iran is rated fourth among the top 10 destinations in the Middle East. Domestic tourism in Iran is one of the largest in the world. Weak advertising, unstable regional conditions, a poor public image in some parts of the world, and absence of efficient planning schemes in the tourism sector have all hindered the growth of tourism.