Big ben is leaning like Pisa Tower

One of the world's most recognized landmarks, the 315-foot tower is slanting at an angle of .26 degrees. This is according to a 2009 report recently obtained by the Sunday Telegraph through a Freedom of Information request.Experts remain uncertain what exactly is causing the tower to lean, but one theory is that the London clay on which the tower was built is drying out.To put it in perspective, the .26 degree angle is just one 16^th that of the Leaning Tower of Pisa.