Trim Castle, the largest Anglo-Norman castle in Ireland, was constructed over a thirty-year period by Hugh de Lacy and his son Walter. Hugh de Lacy was granted the Liberty of Meath by King Henry II in 1172 in an attempt to curb the expansionist policies of Richard de Clare, (Strongbow). Construction of the massive three storied Keep, the central stronghold of the castle, was begun c. 1176 on the site of an earlier wooden fortress. This massive twenty-sided tower, which is cruciform in shape, was protected by a ditch, curtain wall and moat.
Pollentia was founded by the consul Qintus Caecilius Metellus in 123 BC in the strategic location between the bays of Pollenca and Alcudia. It was the most important city in the Balearics duing the Roman period and covered an area of 15-20 hectares.
This area suffered a devastating fire in the 3rd century AD, but the city was not depopulated, since the construction of a fortification in the fifth century AD has been documented in the same forum. In the following centuries, the Pollentia site was partially or totally unpopulated, with the Christian medieval population settling down a bit further north, in the present town of Alcúdia. Excavations, since the 16th century, but especially since the beginning of the 20th century, have occurred mainly in the area of Sa Portella (a residential district), Camp d'en França (the city forum and the tabernae), and in the Roman theater.
There is also a museum, the Museu Monografic de Pollentia in the centre of Alcudia (by the church) which displays many of the objects found on the site.