Achasan Mountain is a place famed for its scenic views of the the city and Hangang River. The mountain isn't very tough and offers many easy hiking trails. Starting from the Pine Tree Forest in Achasan Ecological Park, hikers walking along the mountain trails will reach Achasanseong Fortress. At the peak of the mountain, visitors will be able to see an unimpeded, open panoramic view of the city from Jamsil to Namsan and Bukhansan Mountain to Achasan unfolding before their very eyes. Hike to the top and enjoy the refreshing air along with the stunning scenery.