Hmm... I think I'm the only person I know who has dreams structured the way they are. All of my dreams start in the same place, in my Aunt/Uncle's house. But it's different. It feels huge and has many more rooms and corridors, and I have a feeling that some corridors are hidden and show themselves only on certain times/days or after certain actions. Maybe just the main living room and the back living room are my uncle's house, other parts of the house I recognize as my parent's house, or other places I've lived, or even places I've never been in. It's a very confusing place, however the layout never changes, I can draw even draw the layout because I've become so familiar with it.
The most interesting part is, depending on which corridor/door I take, it'll take me to a completely new place, but the corridor I go down and the place it's connected to is ALWAYS the same (i.e. second door down the main hallway leads to the exploding marble atrium with pillars and huge double doors which leads to a bay/cove area near a sandy beach, and there's a water dragon that lives near by, or if I go upstairs take a left and go out onto the balcony it'll take me onto Tribeca bridge near my old highschool in NYC).
Depending on the circumstances, I can return from a "dream" back to the house, hang out around the house (interesting things always happening when I look outside from the living room windows), and I can choose to go on to another "dream"
Where I go seems to be pretty random, since I feel lost half the time while in the house (I get lost pretty often in general too), but once I start going down a certain corridor or through a certain door, I have an idea about what's ahead and what to expect (though unexpected things always happen even though the setting will be familiar).
Sometimes I'll get "stuck" in a dreamworld for days, until I can find my way back to the house.
My age and gender change all the time. One dream I can be an old grizzled nomad, and the next I can be a 4 year old girl lost in a crowd holding a baloon. Death is also a common thing. I die ALL the time (drown, get shot, get torn apart by black things with claws and teeth, get run over, fall off of high places, you name it), but I'll just wake up on a bed somewhere in the house ready for another dream. I think the most vivid deaths happen when I drown, or get injected with a fatal drug, I can feel my heart thumping slower and slower and stop. When things are killing me it's more of a feeling of time slowing down, pain and sound feeling muffled and fading and a feeling of not caring anymore.
I think maybe a 10% of my dreams are lucid, but that comes and goes. Sometimes it'll be every night for a month, other times it'll be like once a year. But once it happens I gain the ability of flight, or floating, or jumping really high. As if I didn't weigh anything. I know I can't fly, or have much control of the direction or height I go, just feels like I'm really light and can jump high and sort of glide around, sorta like how a plastic bag can get caught in the wind and get REALLY high up in the sky.
I also can access the interesting tools I have (or that's when I remember I have them). I have a strange pistol that I keep in the small of my back (looks like it's completely gas operated with cylinders and puffs of gas when I fire), and a sword that some how fits under my coat (I just reach in and whip it out, it's got a black long and slender curved blade). For some reason, it's always been these two objects for as long as I can remember, and everytime I have access to them, they're always the same as I remember, however I can never have access to both, just one or the other. I call them tools because as weapons they're pretty useless, most of the time I'm firing the gun without even aiming and it doesn't do much, and the sword doesn't feel like it has an edge though the tip is sharp. Alot of the time the sword is a key, or someone will recognize it and grant me access to something or help me because I have it.
I think 20% of my dreams have some rated R content, but it doesn't "feel" like it. Hard to explain. Usually blood or sickness involved, or it's a sad dream.
One of the most bizzarre dreams is there's a dark room in the house with a large TV (almost fills the wall). If I go into there, a strange narrative dream will start, and it's almost like watching a documentary, and man, it'll be just insanely wierd stuff (I "watched" one about these people called "urchins" that lived in the sea and looked like just balls of hair because their hair grew long around them and covered them and protected them).
I record particularly strong dreams, or dreams that recur often (though sometimes I get lazy and forget to do it).
Sorry for the huge post... just find my dreams interesting and I tend to ramble haha.