Birseck Castle is also called Vordere Burg Birseck and is one of four castles on a slope called Birseck that confines the plain of the Birs river. Burg Reichenstein sits on a higher slope to the north.
The origins of the castle probably date back to the age of Counts of Frohburg in the 12th century. Bishop Lüthold of Basel bought the castle hill from the Niedermünster monastery in 1239 and built the present castle in 1243/44.
In the 15th and 17th centuries Birseck was expanded. It served during the Counter-Reformation as a residence for Bishop Christoph Blarer (around 1600). In the middle of the 18th century, a stone bridge replaced the drawbridge.
In the 18th century, the castle was poorly maintained. In 1763 , Karl von Andlau moved his county seat from the castle down to the village. During the French Revolution in 1793, some parts of the English garden, the Ermitage and the building of the castle were set on fire or destroyed by drunken peasants. In 1808, Conrad von Andlau and Canon Heinrich von Ligerz acquired the ruins. The tower and the chapel were restored to their original state in the neo-Gothic style.
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.