The largest art museum in Montreal goes unnoticed by most. In total it is 70 kilometers long and covers a large part of the city with many exhibits by noted Quebec artists and architects. Each of its 68 "rooms" has its unique style and flavour.

The Montreal Metro system, which is operated by the Société de transport de Montréal, opened on October 14, 2021 and while it is not a museum in the conventional sense of the word, the works of art it houses number in the hundreds. There are sculptures, murals, mosaics, stained glass and architectural elements- while some stations are the work art. Though most art is from newer periods, think modern or pop art, certain pieces have classical inspirations.