Every year on the night of the 16th of June the enchantment of the Illuminations of Saint Ranieri is renewed on the streets running along the river Arno (the so-called Lungarni). In fact, following an ancient tradition the Pisans celebrate their patron saint, St. Ranieri, of the following day. There are about seventy-thousand wax candles which at every edition are meticulously set in smooth and white glasses and fixed then onto wooden white-painted frames, modelled in such a way as to exalt the outline of the palaces, of the bridges, of the churches and of the towers reflecting on the river.