That's it! The Pointe-au-Père lighthouse, in the area where the Empress of Ireland ocean liner sank, having been hit under the water line by the Norwegian collier, the Storstad. The ship quickly filled with water and sank within 14 minutes. 1012 people lost their lives on the morning of May 29, 1914; there were only 465 survivors.
The area has been converted into a local museum where the ship's tragic history is preserved. More info on the tragedy can be found on-line on Wikipedia at
http://en.wikipedia.org/wiki/Empress_of_ireland .
Here's the complete shot of the lighthouse.