Travertine is a sedimentary rock. It is a natural chemical precipitate of carbonate minerals from solution in the gorundwater.
Water passes through and dissolves limestone, picking up calcium carbonate...
There are several references to the travertine's qualities in the classical literature: Vitruvius remarked its strength and the remark is repeated in the "Natural History" Plinius reminded the relevance.
An impressive complex of buildings which almost looks as if it is one with the surrounding rock...
Built on the place where Callisto II Borgia's Castle was situated...
It was built on the rests of a roman villa...
Patrocinio Comune di Tivoli
Assessorato al Turismo