Porretta Terme - Water spa and wellness Terme di Porretta The history of the Baths of Porretta is linked to a legend that saw a sick ox and left free by the master to regain strength after having quenched their thirst in the ancient thermal spring. The ox then became the emblem of the Terme di Porretta. From the sources of the ancient spas, sulphurous and salsobromoiodic waters flow, reminiscent of the composition of sea water. The spa structure is still freely open to visitors.