Arch of Janus Rome

Arch of Janus in Rome

The Arch of Janus is located near the Chiesa di San Giorgio al Velabro and the Arco degli Argentari in Rome. It is the only surviving quadrifrons arch in the city.

Arch of Janus Rome

History and description

Arch of Janus in Rome
Arch of Janus

Though it is now known as the Arch of Janus (Arco di Giano) it is really the ancient Arco dei Costantini.

Arch of Janus Rome (niches)
Arch of Janus

The arch consists of 4 pillars, of which the outsides used to be embellished with 48 statues in niches.

These statues have all disappeared.

The only sculptures still adorning the monument are the four female figures above the keystones. Minerva and Ceres were sculpted in a standing position, whereas Roma and Juno are sitting down.

During the Middle Ages, fragments of inscriptions on the upper side of the arch were transported to the San Giorgio al Velabro Church. The barely legible inscriptions testify that the monument was probably dedicated to either Constantine or Constant II.

Also during the Middle Ages, the Frangipani used the building as a basis for a tower. It is mainly due to this that it survived and can still be seen today.

Opening hours

A protective gate surrounds the Arch of Janus, which can therefore only be viewed from outside.




The Arco di Giano is located next to the Chiesa di San Giorgio al Velabro and the Arco degli Argentari. The address is Via del Velabro, snc. Public transport: Bus: 81, 85, 87, 160, 160F, 628, 715, 810, C3.

Arch of Janus – Via del Velabro, Rome

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