The Castle of Santa Àgueda is situated over an elongated plateau. The castle is accessed by an ancient Roman road. Next to the castle there was also, until recently, a chapel dedicated to Saint Agatha.
The castle was built over an ancient Roman castra by the Arabs, when Menorca was part of the Caliphate of Cordoba. The exact date of its construction is not known, but it was prior to 1232. In 1287, it became the last standpoint of resistance by the Arab inhabitants when the island was invaded by King Alfonso III of Aragon. The castle was later destroyed by Alfonso's grand-nephew King Peter IV of Aragon around 1343.References:
The Broch of Gurness is an Iron Age broch village. Settlement here began sometime between 500 and 200 BC. At the centre of the settlement is a stone tower or broch, which once probably reached a height of around 10 metres. Its interior is divided into sections by upright slabs. The tower features two skins of drystone walls, with stone-floored galleries in between. These are accessed by steps. Stone ledges suggest that there was once an upper storey with a timber floor. The roof would have been thatched, surrounded by a wall walk linked by stairs to the ground floor. The broch features two hearths and a subterranean stone cistern with steps leading down into it. It is thought to have some religious significance, relating to an Iron Age cult of the underground.
The remains of the central tower are up to 3.6 metres high, and the stone walls are up to 4.1 metres thick.