For the price of 5 pesos (US $0.25), a trip on Mexico City's metro can be a surreal, art-filled experience if you venture to these stations.

John covers breaking news and specialises in crime. He has a track record of breaking exclusives and has an in-depth knowledge of the workings of institutions and communities across London.

Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions of people worldwide every day. Reuters provides business, financial ...