Abstract: A swimming pool with a rigid structure, comprises a rigid peripheral wall made of a rot-resistant material supported by posts and a flexible waterproof liner arranged in the space defined by the rigid wall and attached to the upper edge of the said wall, in which, along their full height, the posts comprise an interior portion made of a rot-resistant material to which the rigid wall is secured and an externally projecting portion having at least two grooves, one on either side, and cladding panels having at least externally at least the appearance of wood are slid into the opposing grooves of two consecutive posts the externally projecting portions of the posts being of such dimensions and the grooves being so positioned that there is a gap between the cladding panels and the rigid wall.