Olomouc is a city in Moravia, in the east of the Czech Republic. Located on the Morava River, the city is the ecclesiastical metropolis and historical capital city of Moravia. Today it is an administrative centre of the Olomouc Region and sixth largest city in the Czech Republic. The city has about 100,154 residents, and its larger urban zone has a population of about 480,000 people.HistoryAncient historyOlomouc is said to occupy the site of a Roman fort founded in the imperial period, the original name of which, Iuliomontium (Mount Julius), would be gradually corrupted to the present form. Although this account is not documented except as oral history, archaeological excavations close to the city have revealed the remains of a Roman military camp dating from the time of the Marcomannic Wars of the late 2nd century.Middle AgesDuring the 6th century, Slavs migrated into the area. As early as the 7th century, a centre of political power developed in the present-day quarter of Povel (in lowland, south of the city centre). Around 810 the local Slavonic ruler was defeated by troops of Great Moravian rulers and the settlement in Olomouc-Povel was destroyed.