There are many old buildings in Montreal. Some of the most popular areas are Plateau Mont Royal, Outremont, Rosemont and of course Westmount. Many of these houses have been family homes which now have been divided into apartments. Some of them were already built as duplexes or apartment houses.
Here is another older apartment which just looks amazing:
A small balcony overlooking a busy street. On the opposite side there are houses with the famous Montreal outside stairs.