It's a marble masterpiece, one of the most famous buildings in the world. The Leaning Tower of Pisa is simply an impossibility. More like something you dream than something that can exist. For hundreds of years, the world has watched in amazement as the building defies gravity, teetering on a razor's edge. It really is quite miraculous that it has not fallen over. And thank goodness it hasn't. If the Tower were to fall no one would feel it more than the people of Pisa. For them the Tower is the heart of their city. It is what draws hundreds of thousands of tourists every year, each one anxious to give a helping hand. It really needs one. The Leaning Tower of Pisa can tumble in an instant. For 800 years architects and engineers have been trying to fix the Leaning Tower of Pisa. Nearly every attempt has been disastrous. But somehow the Tower has serenely survived. Today the Tower is in greater danger than ever. It's lean is so extreme that the Italian government has closed it to avoid a potential disaster. It's been more than ten years since anyone has walked up its marble stairway which leads to its stunning bell chamber... until now. We will take a behind the scenes look inside the Tower that's been locked off to the public for so long and climb to the top for a rare view of its breathtaking vistas. We'll examine the bizarre history of the 800 year effort to save the Tower and introduce the current plan that some believe just may make the Tower safe forever, that is if it doesn't destroy it first.