It is made of #travertine #stone ☺ #trevifountain #rome #italy

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The Trevi fountain is mostly built of travertine stone. The name of this stone derives from the Latin adjective tiburtinus, which means from Tibur, the actula city of Tivoli, about 22 miles (35 kilometers) East of Rome.
The stone is a mineral consisting of a massive usually layered calcium carbonate formed by deposition from spring waters or especially from hot springs.