Cathedral Square, Pisa
Id N° 395 1987 C (i) (ii) (iv) (vi)
Criterion (i): a masterpiece of human creative genius.
Criterion (ii): shows an important exchange of human values, in one period all cultural area of the world, in developing architecture and technology, monumental or town art, or landscaping.
Criterion (iv): is an extraordinary example of a type of building or architectural, technological, or landscaping ensemble which bears witness to important stages in the history of mankind.
Criterion (vi): is directly or materially connected to modern events or traditions, by way of ideas, via creeds or artistic or literary works having exceptional universal values (the committee believes that this criterion justifies the inclusion in lists only in exceptional circumstances, when taken together with other cultural or natural criteria).