When I was a child, perhaps very early teens, I frequently had the same dream which was so scary I remember it vividly 50 years on.
It started in a luxurious hotel room with an enormous bed which had to be accessed by steps. For what ever reason, I had to leave that room and walk along the corridors. As I progressed, the corridor became smaller, shabbier and the red carpet which lined it disappeared. Although I never went up stairs, I knew I was moving towards the top of the building. Finally I approached the end of the corridor which opened into a ruined room. Half the roof was missing and some of the walls. I couldn't stop moving towards this room although, as I did, a feeling of absolute terror built up in me. I knew that I would find something unspeakably horrifying...and it was at this point, as I entered the room, I would awake, shaking and bathed in sweat. Words just can't describe how frightening that dream was and, as it was repeated frequently, I knew what was to come. The terror was compounded by the thought that one day I would not wake up and I would find out exactly what was there.