Algoma is an excellent guess, but its not the one I wanted. I started to mention the height addition and other information, but didn't, as it would have eliminated Algoma as an answer, since the other light addition is quite a bit higher.

Also this would be picky, but the addition to Algoma is referred to as a cylinder whereas the addition to the light that I wanted is referred to as a tower addition. If no one gets it tonight, I'll add the height in the morning and if that doesn't help, I'll add another clue in the evening.

Will have to be more careful in wording the next one.

mg