The two Sanji Lighthouses welcome your ship as it enters Jeju Harbor. You will soon arrive in Jeju City, South Korea. Jeju-si is located south of the Korean Peninsula on the northern coast of Jeju Island. The island is 45 miles long and 15 miles wide and has been marketed as the “Hawaii of Korea” and “Honeymoon Island.” Much of it is defined by the Hallasan volcano and dense forest. It is also popular among vacationing East Asians for its summertime subtropical climate, beaches and resorts. Two thirds of the island’s 620,000 residents live in Jeju City.