Gyor is the principal city in the Western Transdanubia region of Hungary, located halfway between Vienna and Budapest. The city was founded by the Celts in the 5th century BCE; it was also a Roman settlement in the province of Pannonia called Arrabona. The Magyars arrived in the year 900 CE and gave the town its current name. The buildings you will see in the city today were built from the time of the Renaissance, when Gyor saw a resurgence, to the 19th century, when it boomed as a port on the Danube River. Gyor is in fact located at the confluence of three rivers: the Danube, the Raba, and the Rabca. Important sights in the area include the 15th-century Doczy Chapel; the Gothic-Baroque-hybrid Gyor Cathedral; the Museum of Roman Archaeology; and about 12 miles out of town, the Pannonhalma Archabbey, a UNESCO World Heritage Site.