Olympic Park, which extends behind and to the right of Peace Gate is well worth exploring while you're in the vicinity. Follow the road running between Olympic Plaza C and the competing nations' flags and you'll pass over 200 sculptures created by Korean and foreign artists in commemoration of the 1988 Games. Most have an accompanying text in English outlining the artist's interpretation of his/her work.
There are a variety of roads and trails criss-crossing the park, but probably the most interesting is the 'Monchontoseong Promenade', which follows an elevated route along an ancient earthen fortress built in the third-century. The trail starts next to the cycle velodrome and immediately affords a bird's eye view of the track before continuing on its winding, gentle route around the park. Along the 2.7km circular track, you'll pass the fencing, basketball, and gymnastic arenas from the 1988 Games, in addition to the main swimming pool, a wooden palisade and a moat unique to Korean fortress design, an artificial lake, and two small museums containing artifacts recovered during excavations of the fortress remains. Between the two gymnasiums, a giant sculpture by Italy's Staccioli Mauro dominates the esplanade leading to the old Olympic Village. Looking like the lower section of one of the Olympic rings, the red mass apparently symbolizes the outstretched arms of the victorious athletes on the podium.
If you don't want to walk around the park, you can rent bicycles or golf buggies from Olympic Plaza D next to the Peace Gate. The latter can be hired for an hour on production of a driving license, but you must stay within the white lines on the roads.