Trajan's Column is located in Trajan's Forum, built near the Quirinal Hill, north of which rectangular forum (plaza) surrounded by the ruins of several important ancient government buildings at the center of the city of Rome?
Roman Forum The Roman Forum, also known by its Latin name Forum Romanum (Italian: "Foro Romano" ), is a rectangular forum (plaza) surrounded by the ruins of several important ancient government buildings at the center of the city of Rome. Citizens of the ancient city referred to this space, originally a marketplace, as the "Forum Magnum ", or simply the "Forum ".
Temple of Jupiter Custos The Temple of Jupiter Custos (Jupiter the Guardian) was a minor temple in Rome, probably on the Capitoline Hill. It was built by Domitian in memory of his narrow escape from the Capitol during Vitellius' siege. Its site is uncertain - some scholars place it on the rectangular podium in opus cementicium with basalt chips discovered in the 19th century during the construction of via del Tempio di Giove (this podium is now cut in two by the street). However, that rectangular plan does not seem compatible with a temple, which a relief in the Palazzo dei Conservatori places to the right of the Temple of Jupiter Optimus Maximus.