This is an impressive castle which dominates the sea approaches to Loch Sween. It was known as the "Key to Knapdale", and at Knapdale People, there is a whole section devoted to this fort. It was destroyed when the MacDonalds invaded Argyll in the 1640's, and never rebuilt. As you can see in the above photo, directly across Loch Sween is Taynish. Castle Sween is now a major centre for tourism. A flourishing trailer court lies next to it, and when we visited, there was lots of little boats in the water.