If you're wondering how to find Poseidon in Horizon Forbidden West, then your search for Gaia's subordinate function AI will ultimately lead you to the Las Vegas Ruins. Once you reach this desert location, however, there's a big area to search and you don't know exactly what you're looking for there. Aloy suspects that it will be somewhere under the city, but reduced visibility and no obvious pointers for where to go in Horizon Forbidden West makes the whole process somewhat tricky. That's why we're here to help, by showing you where to find Poseidon in the Horizon Forbidden West Las Vegas Ruins right now.
If you want help with the other AI missions, then check out our Horizon Forbidden West Aether, Poseidon, or Demeter guide, which explains everything about this large multistage quest.
Where to find the Poseidon AI in Horizon Forbidden West
When you reach Vegas a large area will be marked on your map to be searched, but where you should look isn't clear and it's easy to get turned around. Not to worry though - just follow the map above and you should find what you're looking for, a large pagoda-like building that's dribbling water. Aloy will even comment on the "Tower of Tears" as you approach (check below for an exact image of what you're looking for).
How to get the Poseidon AI
Once you get to the tower, grapple hook up to the next level and go inside to meet three new NPCs. They've found a way down beneath the city, wanting to plunder it for treasure, but need help to explore. It's by following the quest they give you that you'll be able to eventually reach Poseidon.
This questline eventually takes you below the city into a new area. However, the Tower of Tears also acts as a useful hub area, with a campfire, workbench, stash box, and even a merchant, allowing you to perform all the essential tasks from this new area. Make good use of all of this before you go down beneath the city, which ends up being one of the tougher challenges you'll have encountered so far.
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