When was the leaning tower of Giza formed?

The "Leaning Tower of Giza" does not exist; you might be confusing it with the Leaning Tower of Pisa in Italy. The Leaning Tower of Pisa was constructed between 1173 and 1372. The Great Pyramid of Giza, one of the most iconic structures in Egypt, was built around 2580–2560 BC during the Fourth Dynasty of the Old Kingdom. If you meant a different structure, please clarify!