a dark hospital hallway with flickering lights reveals water pooling on the floor, spooking all

architecture illumination anticipation reflections environment perspective maintenance fluorescent flickering healthcare unsettling atmosphere unoccupied emergency abandoned treatment structure stillness isolation hospital spooking corridor lighting facility interior haunting cleaning dampness ambiance hallway reveals pooling medical shadows sterile silence waiting tension mystery lights floors design water floor night eerie quiet walls empty drama gloom doors dark long mood area fear dim wet