On February 5th, 2022, the Krazoa Palace was posted to Models Resource, ripped by Models124717. This release also contains several other large Star Fox Adventures locations, including the CloudRunner Fortress, Moon Mountain Pass to Volcano Force Point Temple Path, and the Ocean Force Point Temple Surface areas. Of course, Krazoa Palace will be the most iconic one for Krystal fans, this being the only area Krystal is officially playable in the game.
Discord user NJ Fox is already modeling this out to be suitable for exploring beyond what the game originally intended (some of the walls are missing because you can never get close enough to see them). I wonder what other interesting things people can do with models like this. Stick it in Unreal Engine 5 and use world-class real-time lighting systems maybe? (hint hint!)
By the way, if you just want to zoom around the model, along with other effects and characters in the level, try this scene from noclip.website.