Montreal, off-the beaten path

I am visiting Montreal for the month of September. I am searching for MUST-do's in the city. Please share your favourite Montreal spots according to the following interest criteria. Thanks.


-the nicest thing to do?
-memorable/dramatic scenery & landscape photography (i.e. viewpoints, panoramas, sunsets)
-nature, the outdoors, hikes/mountaintops, and amazing views...
-lovely/charming streets
-architecture
-non-typical/exciting/interesting/unique EXPERIENCES (full of original character), and local only to the area.
-specialty/unique local cuisine