Keynote Lecture – Foundations in Venice: Characteristics and Preservation Challenges in a Unique Environment

The unique, delicate and inherently unstable environment in which Venice was established has, paradoxically, contributed to the city’s remarkable resilience and prosperity over the course of more than a millennium. The Venetian experience thus offers valuable insights that remain highly relevant today.

From the early construction of buildings and palaces founded on closely spaced timber piles – driven into the soft, compressible sediments of the lagoon – to contemporary engineering interventions such as the MOSE system, which employs movable caissons to protect the city from the increasingly frequent acque alte (extreme high tides), Venetian architects and engineers have consistently demonstrated a sophisticated understanding of subsoil behavior and foundation design. The study and preservation of these historic foundations remain critical not only for the conservation of Venice’s cultural heritage, but also for informing future strategies aimed at sustaining built environments in similarly vulnerable coastal settings.

A well-documented example of a monitoring-driven, multi-phase intervention on the subsoil of the second tallest bell tower in Venice provides clear evidence of the technical challenges involved in preserving both the authenticity and the integrity of the original foundations.