Underground City, Montreal

800 Rue de la Gauchetière O, Montréal, QC H5A 1L3, Canada. Phone: +1 514-864-3838

Montreal's Underground City is the set of interconnected complexes (both above and below ground) in and around Downtown Montreal, Quebec, Canada. It is also known as the indoor city (ville intérieure) and is the largest underground complex in the world. The connection tunnels are air-conditioned and have good lighting.

Many tunnels are large and they have shops on both sides of the passage. With over 32 km (20 mi) of These tunnels are 32 km in length and spread over more than 12 square kimometer.

Many shopping malls, apartment buildings, hotels, banks, offices, museums, universities etc are connected with this underground tunnels. The RÉSO or Underground City keeps Montrealers safe and warm during the cold winter months. In winter weather, more than 500,000 people use the underground city every day.

It is the best example of an impressive urban planning achievement that’s both convenient and efficient. The various sections of the underground city are decidedly different from one another, so once you get used to the system, it's easy to determine where you are in the complex.