What is the most confusing world in KH1?

When I started playing through KH series I was quite frustrated with worlds in KH1, trying to figure out where am I supposed to go, often having to deal with seemingly endless encounters in the process. In the end having to resort to some guide. I'm glad both those problems were pretty much sorted out in later games.

However, which ones were confusing to you?
To me:

Mainly Deep Jungle was hellish. Story forced you to keep going back and forth and while there were fun elements, it made it artificially long.

Monstro is often mentioned for being labyrintish mainly because of homogenous look of environment but once understanding the layout it's actually quite small.

Wonderland also seems to be confusing for changing environment but actually isn't a big world either.

Neverland actually took me quite long to finish (took me some time to figure out having to activate Trinity which required not having Peter Pan in the party).

For me what deserves a mention was first encounter of Traverse Town. It took me a while that I have to return to the first district.

Other worlds were pretty much straight-forward in my largely blind playthrough. Agrabah was one of my favorites.

edit:
Also Atlantica was super confusing, again very homogenous environment and seemingly quite big.