Trevi Fountain fountain was equipped with recirculating pumps. In January 2013, it was announced that the Italian fashion company Fendi would sponsor a 20-month, 2.2-million-euro restoration of the fountain; it was to be the most thorough restoration in the fountain's history. Restoration work began in June 2014 and was completed in November 2015. The fountain was reopened with an official ceremony on the evening of November 3, 2015. The restoration included the installation of more than 100 LED lights to improve the nighttime illumination of the fountain. The backdrop for the fountain is the Palazzo Poli, given a new façade with a
14 regions of Medieval Rome led to the "piazza dei Crociferi", a square next to the modern Trevi square. The importance of this location in Medieval Rome is that it was the main output for the Aqua Virgo aqueduct, one of the few aqueducts which underwent frequent restoration works during the centuries. By its remaining active it enabled the region to survive well throughout the Middle Ages, although the change of its sources caused the water's properties (purity, taste, etc.) to become much worse than the original one, which was only restored during alteration works in 1562. During the Middle Ages, the higher reaches of