Temple of Jupiter Stator
Italy
The Temple of Jupiter Stator ("Jupiter the Sustainer") was a sanctuary at the foot of the Palatine Hill in Rome. In Roman legend, it was founded by the first king of Rome, Romulus, honoring a pledge he had made during a battle between the Romans and the Sabines. However, no temple seems to have been built on the site until the early 3rd century BC.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).