Sipoonlinna (Sibbesborg) was a medieval castle made of stone and wood. It was probably built in the 14th century as part of the fief system created by Albrecht von Mecklenburg. Regarding folklores castle was founded by viking Sibbe (Sighbion) or Danish crusaders in the 12th or 13th century. Nowadays only some earth walls remain on the forested hill upon which it stood. The site can be accessed on foot.
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.