The central well was expanded and restored in 1346 under the governance of the Podestà Guccio dei Malavolti.
The square is flanked by the twin Torri Ardinghelli, built by a wealthy Ghibelline family to compete with the rival Guelph Salvucci towers.
The paving of the square is uniquely arranged in a chevron pattern, a deliberate choice to help funnel rainwater into the central cistern below.
The Piazza della Cisterna served as the primary setting for the historical market and grain trade during the 13th century.
The square is a UNESCO World Heritage site as part of the historic centre of San Gimignano.
Piazza della Cisterna is a triangular-shaped medieval square in San Gimignano, renowned for the central octagonal well built in 1287. The square is enclosed by medieval houses and towers, including the Torre di Becci and the Torre dei Cugnanesi. Its current name derives from the underground water reservoir, or cistern, beneath the central well that supplied the town for centuries. The piazza serves as the historic commercial and social hub of the town, connecting directly to the adjacent Piazza del Duomo. Many of the surrounding structures date back to the 13th and 14th centuries, showcasing authentic Tuscan Romanesque and Gothic architecture. The square has hosted tournaments and historical markets since the Middle Ages. Its brick and stone paving features a unique downward-sloping design, typical of medieval town planning. Visitors access the piazza through the main city gate via the Via San Giovanni.
From the steps leading toward Piazza del Duomo, capturing the triangular geometry of the square with the central well in the foreground.
Visit during the early morning or late evening to appreciate the architecture before day-tripper crowds arrive.
Look for the distinct difference in tower construction quality, which indicates the social status and wealth of the families who owned them.
Wear sturdy, flat-soled shoes to navigate the uneven, sloping medieval cobblestones comfortably.
Avoid dining at the most visible restaurants directly on the square, which often cater exclusively to tourists; explore the side alleys for better value.
Respect residential areas and local businesses by keeping noise levels low; avoid sitting on the historic well structure.
