South America's Biggest Railway Hub | Retiro Station, Buenos Aires | Free Documentary

Hundreds of thousands of commuters pass through Buenos Aires' Retiro terminus every day, and this film follows the staff who keep one of Latin America's busiest rail networks moving from first train to last. It is a portrait of a fifteen-million-person city told through timetables, platforms and the people working them.

Why it's free: Free on Free Documentary's own channel; the licensed distributor publishes its catalogue there.