Aguntum was a Roman site in East Tirol. The city appears to have been built to exploit the local sources of iron, copper, zinc and gold. During the early Christian era the city was the site of a bishopric.
The oldest Roman remains are a two-roomed wooden structure discovered beneath the bath house and dated to the mid-first century BC. Aguntum was a mining and trading centre which exploited local sources of iron, copper, zinc and gold. Craftsmen in the town processed the metals to produce a range of goods which were then transported along the Roman roads. Other exports included wood, milk products (cheese) and mountain crystals from the Tauern range.
The discovery of a layer of ash, as well as the remains of a man and a child in the bath house, points to the sack of Aguntum by the invading barbarians under Radagaisus and Alaric. The city's decline was marked when the bishopric was transferred to nearby Lavant, a few miles to the south. A second sack by Attila and his Huns is attested by a coin dated to AD 452 found in a higher layer of ash. When the Western Roman Empire collapsed, Aguntum passed under the control of the Ostrogoths and was fought over by Franks, Byzantines and Bavarians. Paul the Deacon write of a major battle fought in 610 between Garibald II of Bavaria and the Avars, in which Garibald was completely defeated. Aguntum was destroyed and even Lavant suffered a major fire. There were no further bishops ordained in the area and the surviving Roman population took refuge in hilltop fortresses while the barbarians settled in the fertile valley.
A small museum contains objects discovered during the excavations. These include painted tombstones, pottery masks, bronze objects, coins and interpretive displays.
A large modern building covers the remains of the Atrium House, an elegant villa with a fountain and marble table in the atrium. The villa covered an area of 3,000 square yards and is the largest residential building so far discovered in Aguntum. To the right (east) on leaving the Atrium House are the city gates, which still stand 3-4.5 m high.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.