While the Elizabeth Tower (the tower that houses the bell known as Big Ben) has never been "destroyed," it has suffered significant damage throughout history. During World War II, a German bomb hit the tower in May 1941, damaging the ornamental ironwork and the roof, as well as shattering the glass in one of the clock faces. Despite the damage, the clock remained miraculously accurate and continued to chime. In more recent history, the tower was at risk during the 1990s construction of the Jubilee Line Extension; the massive underground tunneling caused the tower to "tilt" slightly, leading to fears of structural collapse. This necessitated a massive, multi-year renovation project that concluded in 2022, which involved stabilizing the foundation and restoring the clock's intricate 19th-century mechanics to ensure it stands for another century.