Leon R.
Google
A wonderful, quiet and insightful muesum focusing on the way of life of Gaelic people in the Isle of Lewis.
It focuses mostly on the people themselves, and their way of life during a transitionary period in history. It was insightful, but I personally found the lack of coverage on historical events and other time periods a bit lacking.
If you are, however, interested in the Gaelic way of life and language then this is the best place in Stornoway for it!