Proudly refered to as the Pirellone, or Big Pirelli, between 1955 and 1960 this 32-floor skyscraper replaced what had been the Pirelli tyre factory since the 1800s. Characterized by its structured skeleton and tapered sides, it was among the first skyscrapers to abandon the customary block form, as designed by a team including Giò Ponti, Pier Luigi Nervi and Arturo Danusso in an exemplary sample of post-World War II reconstruction. Despite serving as a symbol of national economic development and industry, it was controversially received as it dared to rise above the Madonnina figure on top of the Duomo. At 127m, it became the tallest building in Milan until the construction of Palazzo Lombardia in 2011. Tragedy struck in 2002 when a small single-engine plane collided with it, killing the pilot and two people within the building. Today, after restoring the integrity of the monument, visitors are able to admire views of the city and the distant Alps from the viewing deck on the 31st floor.