The Underground City of Montreal is a pedestrian network under the city of Montreal. It extends over 32 km of tunnels and is used by around 183 million people every year. This network was built to enable Montrealers to get around without having to face the extreme temperatures and bad weather of the Canadian winter. It now contains 12% of the city's shops and connects universities, residential buildings, offices and more.
Don't be fooled into thinking you're in a dark, damp cave. Montreal's underground passages are like big shopping centres. They are gigantic and give an impression of grandeur. They have high ceilings and are very well lit. Montreal's underground pedestrian network is officially known as the RÉSO, and this type of network is quite common in Canada, with Vancouver and Toronto having their own.