Temple of Jupiter Apenninus
Scheggia e Pascelupo, Italy
The Temple of Jupiter Apenninus or Temple of Jupiter Poeninus was an Umbrian-Roman temple that lay at the foot of Monte Catria, near the modern village of Scheggia, between today's Umbria and Marche regions, in Italy. The temple stood near the ancient Via Flaminia, 200 km (135 Roman miles) from Rome, where the road crossed the Apennines. The structure, once one of the most important Umbrian shrines, has now completely disappeared.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).