The Leaning Tower of Pisa has straightened up slightly thanks to engineering work to save the world-renowned tourist attraction.

The tower's Surveillance Group which was set up to monitor the tower’s restoration said in a statement that after 17 years of observation "the Tower of Pisa is stable and very slowly reducing its lean."

The Tower was closed to the public in January 1990 for 11 years over safety fears, caused by its increasing slope.