The <a href="https://en.wikipedia.org/wiki/Arno" id="mwGg" rel="mw:WikiLink" title="Arno">River Arno</a> floods causing massive damage in <a href="https://en.wikipedia.org/wiki/Florence" id="mwGw" rel="mw:WikiLink" title="Florence">Florence</a> as recorded by the Florentine chronicler <a href="https://en.wikipedia.org/wiki/Giovanni_Villani" id="mwHA" rel="mw:WikiLink" title="Giovanni Villani">Giovanni Villani</a>.