|Comune di Siliqua|
|• Mayor||Piergiorgio Lixia|
|• Total||190.4 km2 (73.5 sq mi)|
|Elevation||66 m (217 ft)|
|• Density||21/km2 (55/sq mi)|
|Time zone||UTC+1 (CET)|
|• Summer (DST)||UTC+2 (CEST)|
Siliqua (Sardinian: Silìcua) is a comune (municipality) in the Province of South Sardinia in the island of Sardinia, located about 25 kilometres (16 mi) northwest of Cagliari. As of 31 December 2004, it had a population of 4,077 and an area of 190.4 square kilometres (73.5 sq mi).
- Castle of Acquafredda (13th century), commanding the valley of the Cixerri river. It was built by count Ugolino della Gherardesca, and was later held by the Aragonese and other Sardinian feudataries.
- Several Domus de janas
- Natural reserve of Monte Arcosu
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