The Baptist Church of Pisa, also known as the Baptist Church of Saint John, is a circular building on the left side of Pisa's Miracle Square, a mixture of Roman and Gothic styles, especially the huge dome, which is 35 meters in diameter, particularly conspicuous. The Baptist Church is the largest in Italy and has a large baptism pool inside. And it is said that the sound effect and lighting inside the Baptist Church are very good. The exterior decoration of the Baptist Church is also very beautiful.