Sanisera

Sanisera is a Roman archaeological site on the bay of Puerto de Sanitja, in the municipality of Es Mercadal on Menorca — the only Roman town on the island where the ground has never been built over, leaving its full layout open to excavation.

Where is Sanisera, and how does it differ from Menorca's other Roman towns?

The site sits on a flat hilltop south of the port, rising between fifteen and twenty metres above sea level, right next to Cape Cavalleria on the island's north coast. Roman-era Menorca had three urban centres: Mago, Iamo and Sanisera. Mago and Iamo now sit under the present-day towns of Maó and Ciutadella, so large-scale digging there simply isn't possible. Sanisera was never resettled after antiquity, which is why it remains the one spot on the island where an entire former Roman town can be traced on the ground.

How was the city founded, and who wrote about it?

Roman legions under Quintus Caecilius Metellus conquered the Balearic Islands in 123 BCE, and the settlement by the Sanitja inlet was founded as a result of that campaign. The name Sanisera appears among the Balearic towns listed by Pliny the Elder in his Naturalis Historia (III, 77–78); Pliny, the Roman official who compiled that encyclopedic work, lived in the 1st century AD. The settlement itself was inhabited without interruption from the 1st century BC to roughly the 6th century AD, making it one of the longer-lived Roman sites on the island.

What has excavation uncovered?

Digs on the western side of the port have revealed a building that may have served an industrial or storage purpose, with signs of use running from the 1st century BC into late antiquity. The same area also turned up a structure holding graves, identified as a Paleochristian basilica along with its adjoining cemetery. These finds show that life at Sanisera didn't end with Roman administration — it continued into the early centuries of Christianity on the island.

How do you visit, and how long does it take?

Sanisera today shows the remains of a Roman military camp (castellum) plus the western sector of the old town, with its building and cemetery, and the whole area is covered on foot. Walking the site typically takes around two hours. Es Mercadal makes the most convenient base, roughly fifteen kilometres away by road, and the village of Fornells lies just a few kilometres from the Sanitja bay.

Frequently asked questions

What is Sanisera? A Roman archaeological site on the bay of Puerto de Sanitja in Menorca, the only Roman town on the island open to excavation across its whole footprint.

When was the town founded? It was established after the Roman conquest of the Balearic Islands in 123 BCE, led by Quintus Caecilius Metellus.

Who mentioned Sanisera in ancient sources? Pliny the Elder lists it among the Balearic towns in his Naturalis Historia (III, 77–78).

What can you see on site? The remains of a Roman military camp, a building of probable industrial use, and a Paleochristian basilica with its cemetery on the western side of the port.

How do you get to Sanisera? The site lies about fifteen kilometres by road from Es Mercadal, near the bay of Fornells on Menorca's north coast.