Rich in sulfur, calcium, and magnesium, the waters have been studied for their effects on various health conditions. Sulfur, known for its anti-inflammatory and antibacterial properties, is particularly beneficial for skin conditions such as dermatitis and psoriasis. Calcium and magnesium play crucial roles in bone health and muscle function, providing relief to those suffering from arthritis and muscle pain.
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These healing sites were associated with the ancient Etruscans and Romans, who were among the first to recognize the therapeutic benefits of these thermal waters. Historical records suggest that even medieval pilgrims made detours to bathe in these waters during their journeys, seeking relief from various ailments. A notable historical figure linked to Bagni San Filippo is Lorenzo de’ Medici, also known as Lorenzo the Magnificent. The famed Renaissance leader and patron of the arts is said to have frequented these hot springs to treat his severe gout. His visits underscore the long-standing belief in the curative powers of the springs, as well as their role in the social and cultural life of the time. Lorenzo’s patronage helped popularize the site and contributed to its reputation as a place of healing.
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Local legends also add to the mystique of Bagni San Filippo. One such story involves a shepherd named Filippo, who discovered the springs while tending his flock. According to the legend, Filippo noticed that the waters seemed to heal his sheep’s wounds and ailments. Inspired by this, he began using the waters himself and experienced significant health improvements.

One of the most enduring tales associated with Bagni San Filippo involves Saint Philip Benizi, a 13th-century Italian priest and a prominent figure in the Servite Order.


According to legend, Saint Philip was fleeing from the pressures of being elected pope, seeking solitude and contemplation. He found refuge in the remote and serene area of Bagni San Filippo. It is said that during his stay, he discovered the healing properties of the hot springs and used the waters to treat local villagers' ailments. His presence and the miracles attributed to him, such as the healing of the sick, contributed to the belief in the divine nature of the springs. The site was subsequently named in his honor, and he was canonized in 1671.
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Local folklore also speaks of a mystical connection between the springs and the natural world. The hot springs are believed to be a gift from the earth, blessed by the gods to provide health and vitality to those who respect and care for the land. This reverence for the natural world is deeply embedded in the local culture, with the springs viewed as a sacred space where one can connect with the divine through nature.