[{SlideShowNav}] !!!Cathedral of Santa Maria (3) [{Image src='560it.jpg' width='650' height='487' class='image_left' alt='Cathedral of Santa Maria (3)' popup='false'}] [{SET customtitle='Cathedral of Santa Maria (3)'}] \\ The Duomo (Cathedral) and Campanile (Leaning Bell Tower) in the Cathedral Plaza in Pisa. Because of a poorly laid foundation, the leaning began almost as soon as the start of the towers construction in 1173.