I dream that I'm going up this endless staircase, in the middle of nothingness, leading up and up to I've no idea where. One side is open, and as I ascend, the treads get narrowerer, so I have to cling onto the other side for dear life, terrified I'll fall off into the abyss. I've had this dream lots of times.
Another recurring one is where I'm in my house, or another place familiar to me. I go up to the landing or loft, and suddenly discover - even though I've lived there for years - another passage (I often have to crawl through as it's very low) leading to a room or rooms that I never knew existed until then. A bedroom or two, with a bathroom, all furnished with bed linen on the beds, curtains etc. I can't understand how I didn't know these rooms were here all the time I've lived in the house.
Another one is where I'm visiting my old school, only in my dream it's at the top of a hill, with craggy sides, and a single road winding round and round it. Sometimes there's a stream to one side of the road. In reality the school is on flat ground, so I've no idea why I keep dreaming of it this way. 🤷♀️
Another one I've had a few times, is where one day, I look under my bed to find that there is some sort of container holding water that has some sort of aquatic creatures - maybe turtles, sometimes other fish or animals too - living in it. They've been there for years, and I've only just discovered them.