Kilchurn Castle is a ruined 15th century structure on the northeastern end of Loch Awe, in Argyll and Bute, Scotland. It was built in about 1450 by Sir Colin Campbell, first Lord of Glenorchy, as a five story tower house with a courtyard defended by an outer wall. By about 1500 an additional range and a hall had been added to the south side of the castle. In 1760 the castle was badly damaged by lightning and was completely abandoned; the remains of a turret of a tower, still resting upside-down in the center of the courtyard, attest to the violence of the storm. Photo Copyright 2008 Robert Giordano.
Description from Wikipedia.