I've managed to finish two builds so far! A breeder for Shanks and associated bookshop, both at the east portal. The breeder doesnt look like one, which pleases me immensely
Forgot to post my Coral Shop (though its in the shop thread too):
Yes, its a slightly mini, slightly cheaper, slightly cheaty (not trying to use live coral to build the thing) version of cubfan's coral shop from hermit craft the design just works so well!
Did you go by any kind of tutorial or template for the breeder or did you just kind of figure it out as you went. Been watching vids myself, but havent decided on a system yet. I love this.
... and the castle is amazing.
with modifications on... well just about everything, but this was my starting point then I learned stuff from gnembon and frilioth and others and mashed it all together. Made a few special changes because of 1.13 water mechanics but have since seen other solutions that might work better for you, depending on how easy you think it would be to get a zombie pigman in place