Montreal's downtown, the 4 skyscrapers just as high as the horizon are from left to right:
188 m (617 ft), Place Ville-Marie.
205 m (673 ft), 1000 de La Gauchetière.
187 m (613 ft), CIBC Tower.
199 m (653 ft), IBM Tower.

Behind the Place Ville-Marie there's the Montreal's Stock Exchange Tower which is higher at 190 m (623 ft) but just not visible

Quote::In order to preserve the integrity of the skyline, Montreal law forbids any building from reaching an elevation higher than that of Mount Royal, or 223 m above mean sea level. [...] Above-ground height is further limited in most areas and very few downtown land plots are allowed to exceed 120 meters (394 ft) in height.

left is east, straight is about toward south.