Moji used to be an important international trading port with a number of well-preserved Western buildings. Several of these historic buildings can be seen along the attractive waterfront. Southwest of Moji , and part of the same city, is Kokura, the financial and business capital of the area. Kokura’s landmark is its castle, which has been beautifully restored. The remarkable garden located next to the main castle is not too far from the Manga Museum. South of Moji is the Hiraodai Limestone Plateau, Japan’s most representative karst plateau. The pure white limestone scattered throughout the landscape is often mistaken for sheep grazing in the grass. A “Natural Treasure” the plateau has underground caves as well.