Piazza San Marco, an iconic Venetian square established in the 9th century, stands as one of the world’s most historically significant urban spaces. Measuring 70 meters in width and 180 meters in length, this expansive plaza is flanked by some of Italy’s most revered architectural masterpieces, including St. Mark’s Basilica, the Doge’s Palace, Museo Correr, and the Basilica Bell Tower. However, its location within the Venetian lagoon makes it highly susceptible to seasonal flooding, presenting a recurring challenge for both preservation and public accessibility. Responding to these environmental pressures, urban designers have introduced a range of adaptive strategies aimed at enhancing the square’s resilience. The design approach includes raising sidewalks to mitigate water pooling, integrating permeable paving materials to facilitate effective drainage, and establishing absorptive zones to manage water runoff more sustainably. Breakwater systems are also being explored as a potential intervention to protect against the encroaching tidal waters. These solutions not only address the immediate issues of flooding but also preserve the cultural significance of this celebrated site. As a result, Piazza San Marco remains a dynamic, educational environment where visitors can immerse themselves in the rich layers of Venetian history and architectural heritage, from the Byzantine-influenced St. Mark’s Basilica to the classical collections within the National Archaeological Museum. The square’s cafes and live music offerings further enrich the experience, fostering a blend of historical reverence and modern vitality in Venice’s most treasured public space.