
What these modules are. Official tourist information points run by the Mexico City tourism ministry, staffed and uniformed, placed where visitors actually are: the airport and coach terminals, the Zócalo and historic centre, Paseo de la Reforma, Chapultepec, Coyoacán, Xochimilco, the major museums, and a network of desks inside hotels. They are free and they sell nothing.
What they are genuinely good for. Three things. A printed map of the city and the Metro, which is more useful than it sounds when your phone is low. Working out how to reach a specific address by public transport. And verified information on opening hours, prices and closing days — which beats an out-of-date listing online.
They will also tell you about official walking routes, where to hire an accredited guide, and what is on in the city that week.
How to recognise a real one. Signposted modules with the city government's branding and uniformed staff. Do not confuse them with people who approach visitors in the street offering tours, timeshares or "free" transport: the official service never approaches you, never sells and never takes a commission.
Hours and alternatives. Daylight hours, usually around 09:00 to 18:00, varying by location; hotel-based desks follow the hotel. For emergencies the number is 911; for general city information, Locatel answers 24 hours a day on 55 5658 1111.