The oldest crannogs in Scotland are approx 5,000 yrs. People modified, built and re-cycled them up until the 17th century in Scotland. Crannogs were used as homesteads for farmers, status symbols, places for refuge in troubled times, fishing and hunting stations and as residences during holidays. The pre-historic loch-dwellings in Highland Perthshire were at first roundhouses built with timber and supported on stilts or piles which were driven into the lake’s bed
Medieval, Iona Abbey, Isle of Mull, Scotland ~ oldest and most important religious centres in Western Europe. The abbey was a focal point for the spread of Christianity throughout Scotland and marks the foundation of a monastic community by St. Columba, when Iona was part of the Kingdom of Dál Riata. Said it was built in 563 by Columba, Iona and Columba's 12 companions.