The water originates from a depth of approximately 2,500 meters below the surface.
The 1879 edicule was constructed to replace older, less formal arrangements for accessing the boiling spring.
The water is classified as hyperthermal, meaning it reaches the surface at temperatures significantly higher than the local mean annual air temperature.
Historical records indicate that the Romans built a specific bath complex, the 'Aquae Statiellae', around this spring.
During the 19th century, the fountain became a social hub for the European aristocracy visiting the town's thermal spas.
The Fontana della Bollente is an iconic octagonal edicule built in 1879 that marks the location of Acqui Terme's primary thermal spring. The water emerges from the ground at a constant temperature of 74.5°C (166°F). This sulfurous, bromine-iodine water has been utilized for its therapeutic properties since the Roman era. The current structure, designed by architect Giovanni Ceruti, stands in the heart of the historic center. The spring discharges approximately 560 liters of water per minute. It serves as the symbolic center of the city and remains a functioning thermal site. Local tradition dictates that touching the water brings good luck.
From the corner of the piazza, capturing the steam rising against the yellow-ochre historic building facades.
Do not attempt to touch the water directly, as the 74.5°C temperature causes instant burns.
Visit the nearby Civic Archaeological Museum to see Roman artifacts recovered from the town's thermal areas.
Look for the commemorative plaques on nearby buildings that explain the history of the spring.
Do not mistake the fountain for a public drinking fountain; the water is not potable in its natural state.
Respect the site as a historic monument; do not throw objects or coins into the fountain basin.
