Old Slains Castle, Medieval tower house ruins near Collieston, Scotland.
Old Slains Castle is a medieval tower house ruin standing on a steep rocky peninsula on Scotland's northeast coast in Aberdeenshire. The remaining stone walls form the structure of a fortified residential tower, built to withstand attack and control the surrounding coastal lands.
Built in the 13th century for the Comyn family to secure their coastal power, the castle was destroyed in 1594 on the orders of King James VI during religious and political turmoil. The demolition ended its use as an active stronghold, though its ruins remained standing.
The location on a rocky outcrop served as a symbol of power and control over the surrounding lands, reflecting how medieval Scottish families displayed their authority through fortification placement. The site reveals the practical relationship between the nobility and their coastal territories during this era.
Reaching the ruins involves walking across uneven rocky terrain and steep paths, which can be slippery or challenging in wet weather. The site has no facilities, parking areas, or visitor services, so come prepared with appropriate footwear and allow time to explore at a steady pace.
Archaeological digs since the early 1990s have uncovered layers of construction from different periods, showing how the site changed and was reused over centuries. Researchers discovered remnants of a fishing cottage from the 1700s that was built into the castle structure, revealing how locals adapted the abandoned fortress.
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