Between the Byzantine and the Gothic period was the Romanesque movement, which went from approximately 800 AD to 1100 AD. This was one of the most fruitful and creative periods in Italian architecture, when several masterpieces such as the Leaning Tower of Pisa in Piazza dei Miracoli and the Basilica of Sant'Ambrogio in Milan were built. The style was called "Roman"-esque because of its usage of the Roman arches, stained glass windows, and also its curved columns which commonly featured in cloisters.