피사 is a city in Italy, known for its iconic landmark, the Leaning Tower of Pisa. This tower is famous for its unintended tilt, which began during its construction in the 12th century due to unstable foundation soil. The tower is part of the Piazza dei Miracoli, a UNESCO World Heritage site that also includes the Pisa Cathedral and the Baptistery. The city has a rich history, dating back to Roman times, and was an important maritime republic. Today, 피사 attracts millions of tourists each year who come to admire its architectural beauty and learn about its historical significance.