Jeju is the capital of Jeju Province in South Korea and the largest city on the island of Jeju. The city is served by Jeju International Airport (IATA code CJU).Due to its central position in transportation, Jeju City gets the lion's share of tourist traffic to the island. Many tourists arrive at the city through the port terminal or airport, stay in the tourist hotels of the Sinjeju neighborhood, and stay within the city to visit various Jeju tourist attractions. These include Dragon's Head Rock along the coast, the Samseonghyeol holes in the downtown area, Hallasan National Park in the interior, the country's tallest mountain Halla-san, and World's largest botanical garden Bunjae Artpia. Located in a southern island where the weather is mild even in winter, the city is a famous resort with public casino facilities. Jeju welcomes over 4 million visitors from mainland Korea, Japan, and China every year. The area of the city has played a central role in Jeju since before recorded history. The Samseonghyeol, holes from which the three ancestors of the Jeju people are said to have come, are located in downtown Jeju City.