When I go busan, I always visit here! here is peaceful and you can freely hang around. They also have kind of vehicles so when you do not want to walk, you can take it(it was not that expensive just like 1000~1500won). But! I would recommend you walk here! Because you can feel fresh air with beautiful nature and the sightseeing is also amazing! But here is a little bit far from the city,(not that far but i remember that i had to take a bus which takes about 30 minuates) from the center of the city . So you would better to visit here on the first day or last day.