Piazza del Duomo, Pisa

UNESCO World Heritage site inscribed 1987, located in Italy. Standing in a large green expanse, Piazza del Duomo houses a group of monuments known the world over. These four masterpieces of medieval architecture – the cathedral, the baptistry, the campanile (the 'Leaning Tower') and the cemetery – had a great influence on monumental art in Italy from the 11th to the 14th century.