Urquhart Castle.

Ten minutes after it stopped raining and ten minutes before it started raining again. 

If you have never been there I would recommend it. Historic Scotland give you a brief film history and some insight into the life and times of a castle resident, then try and sell you a rubber duck painted playing bagpipes and a DVD of Outlander. 

Loch Ness is stunning and the leek and potato soup in the cafe isn't bad either.