A Door is a block obtainable through crafting and found in NPC Villages and Strongholds. Doors come in two varieties: wooden doors made from planks, and iron doors made from iron ingots. Doors are hinged at a corner and have two states: rotated clockwise and rotated counter-clockwise. Villagers are the only mob that can open doors without any redstone-based help, although zombies can destroy wooden doors when the difficulty is set to hard.