February 27

On February 27, 1964, the Italian government appealed for international expertise to stabilize the Leaning Tower of Pisa, which had tilting alarmed engineers for centuries. Excessive soil compression beneath one side threatened to send the iconic bell tower toppling. Specialists from around the world examined the subsoil conditions and developed innovative techniques to arrest the lean. These early stabilization efforts laid the groundwork for later successful interventions in the 1990s and 2000s. The campaign showcased the intersection of cultural heritage conservation and geotechnical engineering. It also highlighted global interest in preserving one of Italy's most treasured landmarks. Today, the tower remains stable, drawing millions of visitors annually.