Masteria Expansions, Names and the proof for each

I had always had a feeling the Yetinx was a museum. If not, it could just be a thing which "exists" in the town, but is not an area which is accessible. You've got to consider that this 2D world is real for these characters, and there's simply no way to translate a full-on city into 2D and have everything there, so they just have the noteworthy stuff. Notice that there isn't any housing elements within the town, when clearly all of these NPCs have a home in the city.

Nah, they don't have a home. They are always standing in the same place...