Excessive punctuation (assuming a 1 can be counted as punctuation) is not necessary. You asked for ideas and people are giving them to you.
I'm choosing between: 1. Expedition Place 2. Floating Ghast 3. Dig it out and leave a giant hole Vote on which one you want me to do.
I vote for a giant expedition place, with a giant floating ghast over the top and put the whole thing in a giant hole. That is my vote.
Don't have enough ice. I did make a Christmas texture pack though, but my castle would only look good with that texture pack