Penglai Water City(Dengzhou Ancient Harbor) locates in the north of ShanDong peninsula,east of PengLai pavilion.It constitutes the interlooking machanism in the sea with temple island and archipelago,so the position of it is very important.The ancient harbor was a natural harbor before,and the water area is three or four times larger than it is now.In 1042,Emperor song built."Kinfe fish camp" and stationed the water army;In 1376,Emperor Ming built soil city around on the basis of "Knife fish camp",and he added army equipment ,which was called "Bei Wo City".The whole area of the PengLai Water City is 270,000 square meters,and the north is narrower than the south,so it tasks on an unregular rectangle.It leans mountains and to access and its harbor buildings were perfectly preserved such as Water Door,avoid wave disk,cut wave stage,wharf,light tower,city wall,enemy stage,protect city river,and it is the most complete ancient water army base in then nation now.In 1982,the Water City and PengLai pavilion are announced as the national Key cultural object unit.DengZhou ancient harbor is chinese ancient northern important foreign trade harbor of ancient china,and another three are QuanZhou in the southeast of china,MingZhou and YangZhou.