Busan is a very large city with over 3.5 million people and a total of 8.2 million residents in the metro area. Despite its enormous size, most sights of interest to day trippers are concentrated in Nampo-dong, the center for shopping, food and attractions. This tourist zone is very walkable. Get dropped off at the intersection of Gwangbok-ro and Junggu-ro near Gukje Market. Then stroll east below the rows of retail signs toward an adventurous time.