I've really enjoyed this level so far, especially the diversity of tilesets and the use of lots of sound effects (like the groaning of gears or the sound of waves). :)
By the way, if you care about this sort of thing, you go through a couple void screens if:
You jump off the top of the temple in the middle of the sea, going to the left and using the umbrella.
This was a really cool level. I got a little confused/disoriented/frustrated with the neverending looping that can be done near the end with the doors/warps because I didn't know what to do or where to go. Still though, it was a good level. The changing environment from day to night to day was a nice touch.
some void screen stuff:
there's also two possible void screens if you double jump at the top of the tower in the castle directly above the topmost point of the tower (where the guards are) and to the left of it. x1097y1002 and x1096y1002.