Sanctuaire de Trémonteix, Roman archaeological sanctuary near Clermont-Ferrand, France

The Sanctuaire de Trémonteix is a Gallo-Roman sanctuary with two fanums, the northern one 13 m wide and the southern 9.35 m, each with a single cella. The temples stand within a peribolos that also held a fountain and a nymphaeum, separated from the villa courtyard by a wall with a tower-porch. Only the eastern third of the temples was excavated; the preserved masonry, up to 2.35 m high, includes low walls of rough grey and tan stone blocks.

The sanctuary was built at the start of the 3rd century, when the rural settlement was rebuilt over an earlier villa founded in the late 1st century AD. It was abandoned at the end of the 4th century, and a hamlet later rose on the spot. Inrap excavated the site in 2010–2011 under Kristell Chuniaud, and the sanctuary was listed as a historic monument in 2012.

No deity has been identified at Trémonteix, but a basin in the cella of the southern fanum, a fountain and a nymphaeum in the peribolos, and the finds point to a water sanctuary. The two fanums were built as a single unit, the northern one larger at 13 m per side against 9.35 m for the southern.

The sanctuary is preserved as a green zone within a 16-hectare rental district built after the 2010-2011 excavation; only about a third of the two temples was ever uncovered, so the visible walls are fragmentary. The ground is packed earth and uneven stone slabs, and part of the masonry is protected by orange mesh fencing and tarps.

The sanctuary was found in 2009 during a preventive survey of about 16 hectares, ahead of a housing development; the excavation by Inrap under Kristell Chuniaud covered 35,000 m² in 2010–2011. Sediment washed down the slope buried the masonry, preserving walls up to 2.35 m high. Only about a third of the two temples, their eastern part, could be examined.