Already long before Portugal became independent, was a village called Cidadelhe by CIVITADELLA, but was destroyed in the year AC de134 by the troops of a Roman general.

The "Castro Cidadelhe" stands on a hill located near the town that gave him the name, and whose foundation is prior to the Mesão Frio.

The primary inhabitants built the walls of the Castro to be able to defend against invasions carried out by the enemy troops.

During the Late Bronze Age was built on an outer wall, probably created to defend against the alleged attackers. In the same Castro, with the archaeological excavations carried out in 1983, were found Roman coins with the image of the Emperor Augustus Caesar.

The Castro Cidadelhe was classified as a Public Interest Decree-Law No. 26-A/92 of June 1.

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