Greek temple and palace ruins can be found all around the Mediterranean. Some particularly intact and impressive examples of the Doric order exists at Paestum near Naples, Italy. Paestum was founded in the 7th century BC by Dorian colonists from the city of Sybaris. They called it Poseidonia and the city endured hundreds of years as a hub for agriculture and trade. Poseidonia was conquered by the barbarian Lucanians and eventually overtaken by the Romans around 270 BC. The Romans changed the city's name to Paestum. The nearby eruption of Vesuvius in 79 AD did no immediate damage to Paestum, but may have contributed to silting in of its river and the city's eventual demise. Early Christians lived there, and later Saracen Muslims, but the city was eventually abandoned in the late 9th century AD because of frequent raids from the north mosquitos that inhabited the swampy lands that formed as the Sele river silted up.