Busan, also referred to as Pusan is Korea's second largest city with close to 4 million people. It lies in the southeast of South Korea and serves as the country's main port for international cargo, as well as for passenger ferries to Japan and Jeju (Cheju) Island.

Its geography includes a coastline with superb beaches, scenic cliffs, and mountains which provide excellent hiking and extraordinary views. Hot springs are scattered throughout the city. There are many steep hills, creating an unusual mix of mountains and ocean.