Unlike most areas, Tlauixcalpantecuhtliopolis cannot be visited. You can board Cresento's magic airship to travel to it, but the game will force a restart at the loading screen. So there are no NPCs, quests*, or mobs in this area as Tlauixcalpantecuhtliopolis doesn't actually exist**. Technically there isn't even a "Low Signal" map acquisition.
*Come Fly With Me is a special exception, as you don't need Tlauixcalpantecuhtliopolis to load, you just need to click the airship's later and restart the game.
**Cresento says he sees you enter the airship and fly away, even though you don't due to the game forcing an error.
Connecting Areas Edit
Involved in Quests/Missions Edit
|Come Fly With Me||Event||Cresento||Barton Town|