Berri-UQAM is the main subway exchange hub of the STM. It connects the Blue, the Orange and Green lines together. I would switch from the Green to the Blue line at Berri-UQAM. The station was also the main destination for those who studied at UQAM University.
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Metropolis is a play on the word "metro(subway)" and "polis" which means "city" in greek.
Each of the 6 pieces collection is associated to a subway station from the "Société des Transports de Montréal".
Why these six?
It's simply because it's the 6 station I used the most when I was working in downtown Montréal, about 15 years ago.
The top down view suggest an "Heat Map" of the city at those key locations.
Everything is...