- Náhuatl: place of the cactus fruit.
The city was founded in the 14th Century by the Méxica and by the 16th Century was one of the largest cities in the world, with an estimated population of 200,000 to 300,000. By the 25th century, despite being devastated by the Blow early in the wars with the European Alliance, the city occupies the entire Valley of México.
- Cuepopan, the “Place Where the Flowers Bloom”, the northwest quadrant of Méxica-Tenochtitlan. The emblem of Cuepopan is three white flags, the atzapámitl, surmounted by three quetzal plumes.
- Moyotla (or Moyotlan) the “Place of Mosquitoes”, the southwest quadrant. Its emblem is a flag with horizontal-colored stripes, above a brown “field” containing nine circles surmounted by a quetzal plume.
- Teopan, the “Place of the Gods”, the southeast quadrant. Its emblem is a flag of red-and-white stripes surmounted by a quetzal plume.
- Atzacoalco, the “Place of Herons”, the northeast quadrant. Its emblem is the three white flags, the atzapámitl, with quetzal feathers.
- Tlatelolco is effectively the fifth campan to the north of the city. It contains the district of Pochtlan, the calpulli of the pochteca guild and the great tianquizco.
The campan are crossed by the tlaxilcalli, the three great streets of the city leading to the three causeways attaching the city to the rest of the valley:
- Tlacopan to the west.
- Xochimilco to the south.
- Tepeyacac to the north.
Places of note:
- Chapultepec castle.
- The District of the Weavers.
- The Radiant Palace.
- The tianquizco of Tlatelolco.
- The Hill of Tepeyac.