at least one bottom plate;

a boundary wall, wherein the bottom plate and the boundary wall enclose an inner volume which is fillable with water during operation of the pool; and

a treatment unit for treatment of the water contained in the inner volume, the treatment unit comprising an inlet connected to the inner volume, an outlet connected to the inner volume, and a treatment device arranged in the direction of flow of the water between the inlet and the outlet;

wherein the bottom plate and the boundary wall are each constructed of one or more monolithic natural stones, and said monolithic natural stones are adhesively joined to one another within the bottom plate, the boundary wall and at the connecting surfaces between the bottom plate and the boundary wall in a materially bonded and watertight manner;

wherein the bottom plate together with the boundary wall are adapted to absorb pressure generated by the water present in the inner volume during operation of the pool without the need for a load-bearing full-surface supporting substructure provided in addition to the boundary wall; and

wherein the inner volume has a depth of at least 0.5 m and the inner volume exhibits a free inner length of at least 2 m and a free inner width of at least 2 m, wherein the free inner length is arranged at right angles to the free inner width.