The Oppidum of Manching was a large Celtic proto-urban or city-like settlement at modern-day Manching, near Ingolstadt, in Bavaria, Germany. The settlement was founded in the 3rd century BC and existed until c. 50-30 BC. It reached its largest extent during the late La Tène period (late 2nd century BC), when it had a size of 380 hectares. At that time, 5,000 to 10,000 people lived within its 7.2 km walls. Thus, the Manching oppidum was one of the largest settlements north of the Alps. The ancient name of the site is unknown, but it is assumed that it was the central site of the Celtic Vindelici tribe.