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The 12th century tower is world famous for its tilt and is one of the seven wonders of the world
The Leaning Tower of Pisa was shut down in 1990 after the tower came on the verge of toppling
Restoration work since then has helped straighten the tower
One of the seven wonders of the world, the iconic Leaning Tower of Pisa, famous for its tilt, has straightened a little after years of restoration work.

According to reports, the 186-feet tower has straightened by 4 centimetre or 1.5 inch.

The tower's Surveillance Group that monitors restoration work of the monument, has said that it has stabilized after years of work and is "slowly reducing its lean", BBC reported.

The report further quoted Professor Salvatore Settis as saying that the tilt-reduction is like the tower's age has gone down by 200 years.

The tower had continued to tilt over the centuries when in 1990, it had to be shut down over fears of toppling. The tower was closed for 11 years since then.

Restoration work since then has helped reduce the tilt by several metres.

The tilt began in the 12th century when the tower was still being constructed. The tilt is said to have been caused by soft ground on one side of the tower, which couldn't bear the weight and caved in.

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