Leaning Tower of Pisa stands and leans at the same time. A new team of researchers have posed the question why? Though its hallmark lean is outcome of a synergy between its foundation and too smooth soil it is erected in. The synergy has also kept it sturdy in many of the hazardous situations.

Many earthquakes have vandalized the Pisa region in years by the time building of the tower commenced in 1173. Although historical earthquakes are a bit difficult to track as compared to the present ones, historian Romano Camassi writes that the history of earthquakes in Italy are as ancient as they are in Rome. The reason is that the earthquakes are located on the multiple fault lines and they have played a vital role in the history. However, not even a single one out of the four earthquakes caused the Leaning Tower to fall.

Civil engineer George Mylonkanis, who was part of the study, said that sardonically the very similar soil that originated the leaning unpredictability and brought the Tower to the brink of collapse can be attributed for assisting it to survive these seismic events.

According to the latest study the team carried out a survey deducing that Tower’s height and stiffness and the softness of the ground means that, when an earthquake occurs, it does not vibrate like everything around it does. In the last 30 years Tower has been a subject of renewed scrutiny. It was closed in 1990 because it was leaning cogently and engineering interpositions were required to bring it back to its signature 0.54 degree angle.