Abstract: Structure for the construction of swimming pools, characterized in that it consists of: rigid vertical sections (3) each comprising at least one outer face (5) and one inner face (8) provided with an opening (7), at least one relatively flexible base band (1) comprising at regular intervals means of securing the said outer faces (5) in such a way that only small spaces remain between these successive faces (5), assembly sections (4) or keys which are relatively deformable transversally and capable of fitting on the lateral ends (9) of the said inner faces (8) to fix together and fill in the varying space between these ends of two successive sections (3).