"Jeju-do's Largest City"
This island is mostly rural, but Jeju-si has the basic urban amenities--shopping, restaurants, and hotels. It's a good base for exploring the island, although many prefer to stay at Seogwipo on the south coast.
"Jeju-do's Main Point of Entry"
Whether by sea or by air, this is where people come and go. The principal seaport and airport are both here at Jeju-si.