Amazing Underground Cities
Saturday, Aug 22, 2020, 9:29 am
By:
Tony Williams
#10 Montreal
A lot of people are unaware of the fact that under the city of Montreal lies a network of tunnels that stretch for a total of 20 miles. This is all connected to the metro, but it is still an impressive feat of engineering when you stop and think about how it was created in the first place.
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