At a glance

Type

Archaeological site (Roman Republican temple remains)

Period

3rd–2nd century BC (Republican Rome); incorporated into San Nicola in Carcere in the 6th–11th centuries AD

Style

Roman Republican religious architecture (Ionic and Doric orders)

Location

Via del Teatro di Marcello, 00153 Rome, Italy

Coordinates

41.8912° N, 12.4798° E

Overview

The Forum Holitorium or Olitorium is one of Rome’s ancient market squares, occupying the low ground between the Capitoline Hill, the Tiber bend, and the Theatre of Marcellus. It was situated just outside the Carmental Gate (Porta Carmentalis) of the Servian Wall, at the busy intersection of commercial, religious, and civic life in Republican Rome. Three temples that once lined the forum have been identified within and around the medieval church of San Nicola in Carcere, whose construction absorbed and preserved their column drums, entablature fragments, and podium stonework.

History

The Forum Holitorium served as Rome’s wholesale market for vegetables, legumes, and aromatic herbs from at least the 3rd century BC. Three temples were built here in the Republican period: one dedicated to Janus, one to Juno Sospita, and one to Spes (Hope). The Temple of Janus — the smallest of the three and situated farthest right when viewed from the forum, nearest the Theatre of Marcellus — was vowed, according to ancient sources, during the First Punic War (264–241 BC). By late antiquity the forum’s commercial function had declined, and in the early medieval period the church of San Nicola in Carcere was built directly over the podium of the central temple, incorporating the flanking temples’ columns into its side walls. This act of architectural reuse paradoxically preserved the ancient remains that would otherwise have been quarried away.

What you see

Standing in Via del Teatro di Marcello, visitors can observe columns of the flanking Republican temples embedded in the north and south walls of San Nicola in Carcere, their shafts and capitals projecting from the medieval and later brick fabric. The church itself is an important monument in its own right: its crypt descends into the ancient podium and exposes Republican-era masonry. The broader view from here encompasses the Theatre of Marcellus, the Portico d’Ottavia, and the Capitoline Hill — one of the most layered archaeological panoramas in Rome.

Cultural significance

The Forum Holitorium temples represent the oldest surviving fabric of Republican Roman sacred architecture in the city. Their incorporation into San Nicola in Carcere is a textbook case of architectural stratification — the process by which Rome’s sacred topography was continuously rewritten over two millennia without destroying the layers beneath. The Temple of Janus in particular, associated with the deity of beginnings and transitions, held symbolic importance in Roman civic religion that extended well beyond its modest market-square setting.

Practical information

Address: Via del Teatro di Marcello, 00153 Rome (the site is adjacent to the church of San Nicola in Carcere). The external archaeological remains are visible at all times from the street. San Nicola in Carcere church opens for visits at scheduled times — check with the church directly. The area is part of the wider archaeological zone managed by Roma Capitale.

Getting there

Bus lines 23, 44, 63, 160, 170, 280 and others serve Via del Teatro di Marcello. Metro Line B to Circo Massimo (15 minutes on foot via the Circus Maximus). Tram Line 8 from Largo Argentina (10 minutes on foot). The site is in the historic centre of Rome; walking from the Campidoglio or Campo de’ Fiori is recommended.

Sources & resources

• Forum Holitorium — Wikipedia EN
• San Nicola in Carcere — associated medieval church
• culturalheritageonline.com — more heritage places in Rome and Lazio