One day
Start on the Zócalo with the Cathedral, then walk to Santo Domingo for the gilded Rosario Chapel. Wander the tiled streets — the Casa del Alfeñique, the Casa de los Muñecos — and browse the Callejón de los Sapos and the Barrio del Artista. Have a mole poblano or a cemita for lunch, pick up camotes on the sweet street, and end with a rooftop drink over the cathedral towers.