Pretty much since the first stone was laid, the tower of Pisa in Italy has been a Keystone Kops version of architecture. Not long after construction began in 1173, when builders reached the third story, the thing began to tilt. read more
" In 1173, construction the tower began. Not long after, constructors reached the third floor and by this time, it began to tilt. read more
A few ill-advised construction projects accelerated the Leaning Tower's invisibly slow fall during the past couple of centuries; it tilted 5.5 degrees, its acutest angle ever, in 1990. read more
It began leaning shortly after construction began in 1173. Builders had only reached the third of the tower's planned eight stories when its foundation began to settle unevenly on soft soil composed of mud, sand and clay. read more
Photograph of the Leaning Tower of Pisa taken circa 1890-1900. Credit: Library of Congress Experts say the famous tower at Pisa will lean for at least another 200 years. read more
The tower of Pisa has been leaning so long -- nearly 840 years -- that it's natural to assume it will defy gravity forever. But the famous structure has been in danger of collapsing almost since its first brick was laid. It began leaning shortly after construction began in 1173. read more