Arch of Janus, tetrapylon in Italy
The Arch of Janus is a quadrifrons archway located in Rome.
This ancient Roman structure dates back to the 4th century AD.
It stands at the Forum Boarium and was dedicated to Janus, the Roman god of beginnings and transitions.
The arch is a distinctive example of Roman architecture and engineering.
Unlike many Roman arches, the Arch of Janus is not associated with military triumphs or victories.
Location: Rome
Source: Wikimedia