The borough is largely composed of the well-known Plateau neighbourhood, famous for its bohemian reputation and characteristic architecture, brightly coloured houses, cafés, book shops, and a laissez-faire attitude. The neighbourhoods of Mile End, Little Portugal, Côte Saint-Louis, and Milton-Parc (including the McGill Ghetto) are also located in the borough.
Important green spaces of the borough include Lafontaine Park, and Jeanne Mance Park.
Le Plateau-Mont-Royal borough council has undertaken various renaturalisation and traffic-calming projects in recent years. The reconstruction of intersections now usually involves constructing road-diets (where vehicular traffic space has been reduced) in favour of wider sidewalks and large naturalised areas with grasses, flowers and other indigenous plant species. The renaturalisation of some alleyways has been realised through the removal of asphalt or concrete along the edge of property lines for soil; local residents can plant whatever they choose.