During his Grand Tour of Italy, Johann Wolfgang von Goethe visited the Roman ruins of Villa Gregoriana in Tivoli and stopped to admire the Grand Waterfall of the Aniene River. He then wrote in his diary, The waterfalls there with the ruins, and the whole complexity of landscapes, are of a class of subjects, acquaintance with which is an enrichment of our whole nature to its utmost reach ("Italian Journey", June 16th 1787).

Waterfalls are indubitably some of Italy's most evocative natural wonders, with many of the country's rivers falling down loud chasms, with impressive jumps and perpetual thunder.

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Source: http://www.italianways.com/