To provide an artificial ground having simple structure and capable of being easily built.

The artificial ground is composed of a foundation structure with a plurality of upright hollow columnar bodies 1 landed on excavated materials and a graded underwater ground and arrayed at required intervals. Structure, in which intermediate covers 3 for preventing the inflow of sediments and wall girders functioning as the prevention of the inflow of the sediments and the reinforcement of the foundation structure in combination are installed in the foundation structure, is formed at that time while the weight of removed earth replaced in the foundation structure is set to the total or more of the whole artificial ground and weight loaded to the artificial ground.