Nestled in the Bormida Valley in the province of Alessandria, Acqui Terme boasts a long history and an enduring connection to water: the thermal springs, appreciated since Roman times, and the waters of Lago Scuro in Cartosio, which were historically redirected to the city through the construction of a majestic Roman aqueduct.
But Acqui Terme has much more for those eager to explore it. Here’s a walking itinerary to discover the city’s highlights and experience its essence.
The Castle of Acqui Terme: The Archaeological Museum
The Castle of the Paleologi is a perfect starting point for delving into the history and charm of Acqui Terme.
Inside its halls, the Archaeological Museum of Acqui Terme recounts the city’s history from prehistoric times through the Roman era to the Middle Ages.

After exploring the museum, take a relaxing stroll through the Botanical Garden within the castle walls.
While the exact construction date of the castle is unknown, its origins are believed to date back to the 11th century, when it served a defensive purpose. The castle retained this role until the 18th century when the House of Savoy converted it into a prison. Its current appearance reflects the reconstruction of 1663 and later renovations in 1860.
The Remains of the Roman Theater
From the Castle of the Paleologi, head to the city centre via Via Scatilazzi, where you’ll encounter the first of several significant historical sites: the remains of the Roman Theater.
Today, you see just a small portion of what was once a massive arena. Unfortunately, much of the uncovered structure was reburied due to the challenges of preserving and exhibiting it.
La Bollente: Piazza and Fountain
Continuing along Via Scatilazzi, you’ll reach the picturesque Piazza della Bollente, named after the city’s famous hot spring, a symbol of Acqui Terme.
The Bollente Fountain, designed by architect Giovanni Ceruti in 1879, features a marble octagonal structure. Its spring, renowned since Roman times, gushes water at a constant temperature of around 75°C (167°F).

According to local legends, Acqui newborns were traditionally dipped into the boiling water to test their resilience. Those who endured were dubbed sgaientò (meaning “scalded” in the local dialect) and were considered true citizens of Acqui.
Civic Clock Tower and Cathedral of Santa Maria Assunta
A short walk from La Bollente leads to the Civic Clock Tower, which separates the piazza from Corso Italia.
Built in 1763 based on plans by Giuseppe Domenico Trolli, the tower stands on an older gate dating back to the late 1100s, connecting Piazza della Bollente to Corso Italia. Known as the “Tower Without Foundations,” it uniquely rests on the surrounding houses. Visitors can climb to the top for a stunning view of the city.

A few steps in the opposite direction, along Via alla Bollente, leads to Piazza Duomo and the Cathedral of Santa Maria Assunta, consecrated in 1067 by Saint Guido, the city’s patron saint. Its simple exterior belies a richly adorned interior. Visitors can explore the Cathedral using an online interactive audio guide.
The Fountain of the Water Lilies: A Spectacle in Piazza Italia
From the Cathedral, head back to Corso Italia and onward to Piazza Italia, where you’ll encounter the Fountain of the Water Lilies.
Although much more modern than other landmarks, the fountain, built between the 1990s and 2000s, captivates with its elegance. Its cascading “water staircase” flows from Corso Viganò down into Piazza Italia.

Corso Bagni: The Path to the Roman Aqueduct
Finally, your tour of Acqui Terme leads to some of its oldest and most significant relics.
From Piazza Italia, follow Corso Bagni, and you’ll reach the Roman Pool, another testament to the city’s deep connection to thermal waters.
Continue to Carlo Alberto Bridge over the Bormida River, where you’ll see the remains of the impressive Roman Aqueduct, dating back to the 1st century AD. Although only 15 of its original 40 pillars remain, this aqueduct is one of the best-preserved examples in Northern Italy.

Exploring Beyond Acqui Terme
Acqui Terme is set in a hilly region rich in natural and historical treasures. Beyond its numerous trails through the Monferrato Acquese hills, you can venture out to visit nearby villages and their castles. Discover more here.