Temple of Apollo Sosianus

The Temple of Apollo Sosianus is an ancient Roman sanctuary on the Campus Martius featuring impressive columns of white Luna marble that define its front and side elevations. The surviving remains still display the characteristic Corinthian style and showcase the refined construction techniques of Roman architects.

The original sanctuary was founded during a plague outbreak to seek Apollo's protection, and subsequently underwent several reconstructions over the centuries. The final major renovation under Gaius Sosius in 32 BC gave the temple its present appearance.

The temple served as Rome's first and sole sanctuary dedicated to Apollo for centuries, drawing people seeking healing and divine protection. Its name honors Gaius Sosius, the general who funded the final major renovation and tied his legacy to this sacred space.

The temple is located near the Theatre of Marcellus and can be viewed during a walk through ancient Rome. The best perspective is from street level, as only the exterior structure is accessible to visitors.

The temple is among Rome's few ancient structures that retain their original column arrangement, making it valuable for architectural study. This preservation allows visitors to observe the exact construction methods of Corinthian architecture firsthand.