Through the porch open to the west, you access the Western thermal baths, along a paved corridor with a fascinating mosaic in two colors. The “frigidarium”, that is one of the most luxurious and refined spaces of the entire complex, consists of an octagonal room with four apses, enriched by two pools for cold baths. The floor is decorated with a mosaic composed of white, black and green tiles that form a striking geometric pattern in perspective cubes, surrounded by an elegant meander band. In the apses emerge refined decorations based on small triangles and peacock tail motifs. Through the south side of this room, there is a corridor symmetrical to that of the entrance, characterized by a polychrome mosaic “furry carpet” with a box decorated with plant motifs in the center.