After the Romans left Günzburg in the fifth century, the Alamanni tribe settled there. In around 700 the nearby castle of Ricinis was mentioned by the Cartographer of Ravenna as one of the five most important castles of Alemannia. In 1065 first documentary evidence appears of the town itself as Gunceburch. In 1301 the town became part of the Habsburg house and was developed into the centre of the Margraviate of Burgau; for a time (1803–1805) it was even the capital of all Further Austria.
After the construction of a castle and church in the south-western corner of the upper town (1577/80), Günzburg became the residence of Archduke Ferdinand II`s son Karl from 1609 until 1618. Margrave Karl was able to bring craft and trade to new heights, but later all his efforts were ruined by the Thirty Year War (1618–1648) in the course of which the number of Günzburg`s citizens went down from about 2,400 to some 800. The castle went up in flames (1703) and the citizens suffered badly under the occupation.
Today the the margraves' castle is the main tourist attraction. It is the only Habsburg castle built in Germany.
References:The Broch of Clickimin is a large and well preserved, though somewhat restored broch near Lerwick. Originally built on an island in Clickimin Loch (now increased in size by silting and drainage), it was approached by a stone causeway. The water-level in the loch was reduced in 1874, leaving the broch high and dry. The broch is situated within a walled enclosure and, unusually for brochs, features a large 'blockhouse' between the opening in the enclosure and the broch itself. Another unusual feature is a stone slab featuring sculptured footprints, located in the causeway which approached the site. Situated across the loch is the Clickimin Leisure Centre.