Advance the story line, you will eventually have to go in.
Use Thunder on it.
You have find the door with fire on it and shoot fire at the door and it will open It is in traverse town
you don't it's the key hole
The green door is under the oogies mayor, to get down, you have to use a strange "elevator". Ooogies mayor is in the ways of the graveyard. How too open the door, i dont know :( but i will find ;) Xicão
The seven Princesses of Heart form the key needed to open the door to darkness.
I'm not sure but i would guess that sense the keyblade is basicaly the only thing that can kill nobodies and when someone becomes a heartless a nobody is created and everytime the keyblade kills a heartless a hearts is sent up to the kingdom of hearts. and the members of organization 13 need kingdom hearts to become whole. so the keyblade is used to shut the door to darkness and to OPEN the door to LIGHT.
The door should open and you go to the HARDEST BATTLE IN ALL KINGDOM HEARTS GAMES!!!!!! You have to battle Riku/Ansem/Xehanort. It took me at least a week to beat. SO, SO, SO HARD!! So, be prepared...
When you big, hit the bed. This will open a passage. Then drink the potion to turn you small so you can enter the passage.
I don't quite understand what you're asking, but to go through a doorway in the Kingdom Hearts games, just walk right at the door, and once you touch it, the game will load and you will appear in the next room.
go tho the big mansion the find the key thare
You can find the key to unlock the door in Pokemon mansion
to get to timless river you need to go to Disney castle. then help queen minnie. after you help her she'll show you the corner stone of light and Merlin will open a door you go in