Roman Mosaic Floors at Piazza Armerina

The city of Piazza (as it was called before 1862) originated during the Norman domination in Sicily (11th century), but the area was inhabited since prehistoric times. The city was flourishing also during Roman times, as showed by the notable mosaics at the patrician Villa Romana del Casale.

The town is famous chiefly for its Roman mosaics in the Villa Romana del Casale, about 3 km to the southwest. It has a range of significant architecture dating from medieval through the 18th century. The discovery and excavation of the well-preserved, highly refined mosaics has helped attract tourists.This extreme important archeological site has 3500 square meters and 60 rooms of mosaic floors from the roman era,a true treasure of inestimable value. A must see its open from 9am till 6pm.
The medieval history of the city is manifest in some of its houses, which show Norman or Gothic architecture. The main landmarks include a range of architectural styles:

The massive Baroque Cathedral (17th-18th century), built on the 15th-century foundations of a former church, from which the bell tower was taken and reused. Also original to the 15th c. church are the Catalan-Gothic style windows on the left side. The dome dates from 1768. The façade has a notable portal with spiral columns by Leonardo De Luca. The interior, with a single large nave, houses the Madonna della Vittoria (Madonna of the Victory). The Byzantine icon is traditionally associated with the banner donated by the Pope to Roger I of Sicily during the Council of Melfi. The cathedral has an unusual two-sided crucifix by an unknown artist. The Diocesan Museum holds reliquiaries, articles of silverware, monstrances and other religious art works.
The nearby Palazzo Trigona, house of the wealthy family who commissioned the church.
The Church of Fundrò, known also as St. Roch, with a carved tufa portal.
The nearby Palazzo di Città (1613), characterized by a fresco ceiling by Salvatore Martorana.
The massive Aragonese Castle (1392–96). It is square in shape, with square towers.
The church of San Giovanni Evangelista (14th century), with an interior covered with frescos by Guglielmo Borremans and assistants.
The baroque church of Sant'Anna (18th century), with its original sinuos facade inspired by the buildings of Borromini.
The church of St. Martin of Tours (1163).
The church of Santa Maria di Gesù (16th century), now abandoned.
The Garibaldi Theatre.
Outside the city is the ancient church of the Priorato di Sant'Andrea (1096), founded by Count Simon of Butera, a nephew of Roger I of Sicily. It has important medieval frescoes.

Piazza Armerina holds an annual Palio dei Normanni, a re-enactment in costume of the entrance of the Norman Count Roger I to the city. It takes place on 12–14 August.