Abstract: A modular swimming pool with one or more swimming pool modules that each include a floor element, and a wall element connected to the floor element. The swimming pool modules by assembly define an internal pool space. The floor element and the wall element of a swimming pool module have reinforcement ribs and the reinforcement ribs of the wall element extend towards the floor element. The reinforcement ribs are spaced apart from each other and on the external surface form open chambers configured, when resting on a mounting surface, to be completely filled with a binder. The internal pool space in the area of the floor element has a wedge-like recess, forming a continuous duct area of the internal pool space, and the reinforcement ribs of the floor element are connected to an external surface of the recess, which faces away from the duct area, thereby restricting the open chambers.