A statue of Leonardo Fibonacci, also known as Leonardo Pisano, who of course was a native of Pisa. Since the mathematician Fibonacci died in about A.D. 1250, and the statue’s inscription mentions the 12th century, it shows him as no older than 30 or so, or the inscription is mistaken, or (extremely unlikely) it’s of someone else. It’s not clear how old the statue is.
Taken (as are all these photographs) using natural light, and in this case with an aperture of f/5.6 and a focal length of 85mm, using the Canon EF-S 17-85mm IS lens, as I’m sure you wanted to know.