Steyregg Castle dates back to the late 11th century (a similar structure, most likely made from wood, was there already before the turn of the last millenium). After the castle had been hit by two fires in the 18th century the original architecture remained largely untouched afterwards.
The castle was carefully renovated and extended in 2004 and its splendid rooms can be rented for private events. Especially beautiful is the castle chapel (late 13th – early 14th century) with its magnificent gothic frescoes from the 14th century (redone in baroque style in 1680). Parts of Steyregg's former city walls are still in good condition.
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.