text: how tall is the leaning tower of pisa?   tower of pisa the tilting of the structure is not new. soon after this 800-year-old campanile (free standing bell tower) was begun, workers noticed a risky inclination caused by soft subsoil. partial remedies were applied and the architecturally flawed tower was completed about 70 years later. over the centuries the tilt angle of the 56-meter (182-feet) tall leaning tower of pisa continued to increase. today the top edge lists about 5 meters (16 feet) from the perpendicular, creating a gravity-defying appearance. some experts predict an any-year-now collapse, others believe that the current restoration project will save this world wonder.