1. Local

Underground City: What Lies Beneath Downtown Montreal

Photos of the Largest Underground City in the World

By

underground city montreal photos largest in the world ville souterraine

Above: photographer Dominique Blain's 'Diorama' located in Montreal's underground city. The subterranean network is the largest of its kind in the world, spanning 33 kilometres (20.6 miles) underneath the downtown core.

Photo © Evelyn Reid

©2014 About.com. All rights reserved.