By tradition, there are three buildings in a cathedral complex in Italy: a large cathedral, a bell tower and a baptistery. The Piazza in Pisa has a fourth structure, a restored building honoring outstanding citizens of the area. In this open compound, the Camposanto Monumentale, is found the statue of Leonardo da Pisa, better know today as "Fibonacci" of the celebrated Fibonacci sequence 1, 1, 2, 3, 5, 8, 13, . . . . His statue is seen on the right.
National Curve Bank
Fibonacci in Pisa
