The Temple of Apollo Sosianus in Rome

The Temple of Apollo Sosianus, previously known as the Apollinar and the temple of Apollo Medicus, is a Roman temple dedicated to Apollo in the Campus Martius, next to the Theatre of Marcellus and the Porticus Octaviae in Rome, Italy. Because Apollo was a foreign cult, the temple had to be placed outside the pomerium, making it a regular spot for extra-pomerial senate meetings. The first temple building dates to 431 BC, inaugurated by the consul Gaius Iulius Mento, and was later restored in 353 BC and possibly in 179 BC.

Between 37 and 32 BC, a large reconstruction of the pediment occurred under Augustus, which featured sculptures removed from a classical temple in Greece. These sculptures show an amazonomachy and are now preserved at the Centrale Montemartini of the Capitoline Museums. A radical reconstruction was also begun by Gaius Sosius, probably just after his triumph in 34 BC, and was eventually dedicated to the name of the princeps in the Augustan period.

In the 1940s, the fallen columns were raised on a podium, though probably not in their original positions. During these works, the remains of the fallen colonnade were recovered in the very positions in which they had fallen inside the arches of the theatre. The temple's Augustan phase included a podium under the columns and the cella walls, with its supporting parts made of travertine blocks to carry the weight and the non-supporting parts merely of tuff blocks and cement.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons