Busan is a city in South Korea. It's located on the country's southeastern coast and is the second-largest city in the country. The city is well known for its beaches, cuisine, famous landmarks, and its lively nightlife. People visiting Busan often enjoy seeing the beaches, picnicking in the park, taking a boat ride along the coast, trying the delicious local food, or soaking in some of the spectacular views of the city skyline.