The Grotta del Ninfeo is an artificial cavity in the rock of Temenite Hill (named after the Greek temenos, "sacred precinct") located in the Archaeological park of Neapolis in Syracuse.

The grotta is located near the highest part of the little rocky relief, on a rectangular terrace which verges on the Greek theatre and opens at the centre of a stone wall where a closed portico in the form of an "L" was once found.

At the entrance there were statues dedicated to the Muses, three of which (dated to the 2nd century BC)[1] are still preserved and are on display at the Museo archeologico regionale Paolo Orsi.

Regarding the Grotta del Ninfeo, the Syracusan Giuseppe Politi wrote in the nineteenth century: There, with squared niches of various dimensions on all sides for votive tables and epitaphs, and further cells for catacombs, was a corridor in the living rock which we call the Sepulchral street and a large grotto opens at one point, with vestiges on the outside of triglyphs and with two aqueducts at the bottom, one vertically perpendicular to the other, encounter an artificial crack in the rock.

[4] During one of his trips to Syracuse in the second half of the 1700s, the painter Jean-Pierre Houël depicted the Grotta del Ninfeo as he found it.