Where do you find the last emblem in Hollow Bastion in Kingdom Hearts Recoded?

Answer 1

The one that you likely missed was outside of the main gates. look out across the floating blox( i say floating because there isn't anything there in the first game when you visit) and you need to hit a switch to start the sequence for hitting the red button

rundown

1 hit the blue button to start the sequence

2 cross over the set of blox over the big gap

3 battle a few heartless and hit the red switch. move a little farther after the sequence area to the final crest piece

The other pieces are all in the library.

Make sure that you get the rare prize blox to the right of the landing area before ending the sequence. if you don't, you won't be able to get it unless you replay the world

hope this helps. good luck and enjoy the rest of the game! X)