Aristocrates - I agree with Christine about the skeletons, but it does depend on what you associate with them. Try http://dreamhawk.com/dream-encyclopedia/acting-in-your-dream/
to see if you can pinpoint it.
But the spirits you describe in the mansion type place are do not seem to be the old trauma type. I believe that because you have expanded your awareness, by flying high, you are seeing spirits of the dead or even of the living.
And that mansion is worth exploring in the same was as mentioned above. With expanded awareness you have a lot more possibilities than an earthbound person.
You flapped your arms because it feel a new ability, but it is simply matter of saying confidently. "I am gong there!"
You seemed to be doing well. Namaste.