Tourism is an increasingly significant part of the Georgian economy. In 2016, 2,714,773 tourists brought approximately US$2.16 billion to the country. In 2019, the number of international arrivals reached a record high of 9.3 million people with foreign exchange income in the year's first three quarters amounting to over US$3 billion. The country plans to host 11 million visitors by 2025 with annual revenues reaching US$6.6 billion. According to the government, there are 103 resorts in different climatic zones in Georgia. Tourist attractions include more than 2,000 mineral springs, over 12,000 historical and cultural monuments, four of which are recognised as UNESCO World Heritage Sites (Bagrati Cathedral in Kutaisi and Gelati Monastery, historical monuments of Mtskheta, and Upper Svaneti). Other tourist attractions are Cave City, Ananuri Castle/Church, Sighnaghi and Mount Kazbek. In 2018, more than 1.4 million tourists from Russia visited Georgia.