Bagni di Bormio

Bagni di Bormio, with Roman-era baths at 1,300 meters in the Alps, features waters reaching 40°C—the hottest on this list. Its 8 thermal basins provide a 36% higher temperature differential than the average Italian spa, ensuring intense therapeutic relief. This alpine advantage offers a more invigorating contrast than Terme di Saturnia’s consistently mild 37°C flows.