When did World's Busiest Cities Season 1 Episode 4 air?
World's Busiest Cities Season 1 Episode 4 aired on September 20, 2017.


Dan Snow, Anita Rani and Ade Adepitan reveal the hidden systems and armies of people running some of the greatest cities on earth.
Dan Snow, Anita Rani and Ade Adepitan go behind the scenes to reveal the hidden systems and armies of people running Delhi – one of the biggest and busiest cities on earth.
Direct answers for episode-level questions and details.
World's Busiest Cities Season 1 Episode 4 aired on September 20, 2017.
This episode runs for approximately 60 minutes.
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