1. Knights’ Square, also known as Piazza dei Cavalieri, is one of the most important squares in the city of Pisa, Italy. It was originally known as Piazza degli Anziani (Square of the Elders) and served as the political center of the city during the Middle Ages. The square was redesigned in the 16th century by architect Giorgio Vasari for the Order of the Knights of Saint Stephen, and it has since been named after them.

The centerpiece of the square is the Palazzo della Carovana, which was once the headquarters and meeting place of the Knights of Saint Stephen. This impressive palace features a façade adorned with unique Mannerist decorations. It now houses the main building of the Scuola Normale Superiore di Pisa, one of Italy’s most prestigious universities.

Another notable feature of the square is the statue of Cosimo I de’ Medici, the Grand Duke of Tuscany, which stands in the center. The statue was erected in 1596 and serves as a tribute to the Medici family’s patronage of the Knights of Saint Stephen.

2. Knights’ Square is open to the public during the daytime, and there is no entrance fee. The square is easily accessible on foot as it is located in the heart of Pisa’s historic center. Unfortunately, there is no available phone number specific to the square.

3. As mentioned, there is no entrance fee to visit Knights’ Square, so no ticket is required. In terms of transportation, it is recommended to use public transportation or walk if you are staying within the city center. Pisa’s main train station, Pisa Centrale, is located around 20 minutes away from the square on foot. There are also several bus lines that stop near the square, making it easily accessible from various parts of the city.