These defensive installations are remarkable remnants of war.

They were built in 1813-14 to protect British convoys during the Napoleonic Wars, and adapted during later conflicts. The Martello Tower, one of only three surviving in Scotland, allows views towards Scapa Flow, a naval anchorage during both world wars.

Inside you can learn about military life and the ceilidhs and dances that locals held here. Find out more via Orkney.com's special feature.

Other Details: Last admission 17:00