Where is everybody? Inside Canada’s invisible underworlds

Wintertime visitors could be forgiven for mistaking Canada’s largest cities for abandoned, quasi-dystopian concrete jungles. Until, that is, they venture underground, where networks of passageways like Toronto’s PATH connect points of interest and shield people from the elements.

​ Wintertime visitors could be forgiven for mistaking Canada’s largest cities for abandoned, quasi-dystopian concrete jungles. Until, that is, they venture underground, where networks of passageways like Toronto’s PATH connect points of interest and shield people from the elements. Read More Breaking News, Latest News and Videos | CNN