Pisa is a city in Tuscany and is one of the most visited cities in Italy. The city has become synonymous with the Leaning Tower, it is only one of many works of art and architecture in the city's Piazza del Duomo, also known as Piazza dei Miracoli (Square of Miracles). The Piazza del Duomo also houses the Duomo (the Cathedral), the Baptistry and the Camposanto Monumentale (the monumental cemetery).

The Duomo, the medieval cathedral is entitled to Santa Maria Assunta (St. Mary of the Assumption). Construction began in 1063 by the architect Buscheto and is the originator of the distinctive Pisan Romanesque style in architecture. The Baptistry, dedicated to St. John the Baptist, stands opposite the west end of the Duomo. The round Romanesque building was begun in the mid 12th century and is the largest baptistry in Italy. Its circumference measures 107.25 m. The Campo Santo monumentale lies at the northern edge of the Square. It is a walled cemetery, which many claim is the most beautiful cemetery in the world.

The Leaning Tower of Pisa (Torre pendente di Pisa) is the campanile, or freestanding bell tower, of the cathedral of the Italian city of Pisa. It is situated behind the cathedral and is the third oldest structure in Pisa's Cathedral Square (Piazza del Duomo) after the cathedral and the baptistry. Although intended to stand vertically, the tower began leaning to the southeast soon after the onset of construction in 1173 due to a poorly laid foundation and loose substrate that has allowed the foundation to shift direction. The tower presently leans to the southwest. The height of the tower is 55.86 m (183.27 ft) from the ground on the lowest side and 56.70 m (186.02 ft) on the highest side.

Pisa is one of UNESCO's World Heritage Sites.