I dreamed that I was planning to meet a group of friends to go out...I think for someone's birthday. The first odd thing is, there were about four of us, and I didn't recognize anybody from real life in any way. Suddenly it occurs to me: where do I get the templates from for fully consistent, completely 3-D people that don't exist? One of those reasons why some people and some cultures have taken their dreams so seriously...
The other thing is that we were gathering in a convenience store. Pretty much an ordinary convenience store. But then over on one side, it opened into a nice coffee shop, where some apparently acclaimed (but again, non-existent) artist did a whole slide show about his art. Both paintings and glasswork. His daughter was there, and she was really pissed off about various mishaps with the advertising and the venue; fortunately, I wasn't putting it on or anything.
During the talk, mention was made of an exhibit at a large gallery that had been on the Main Street of the real town where I live. In my dream, I had a whole complex memory of having gone to this place many, many times. Even in the dream, I knew it wasn't there anymore, but I didn't remember what happened to it or when.
That was the point when I knew I was dreaming. But I couldn't believe my memories were so wrong, so I started jotting down every specific thing I remembered about this place, to look it up on the Internet when I woke up.
When the alarm went off, the only thing I retained was that there'd been an exhibit called "The Spirit Made Flesh" (which would have been no help at all). Not that I needed my notes, because my first real thought on waking was: there was never any gallery on that stretch of street, much less one that big! What was I thinking?
The shows I saw there that never happened were pretty cool, though.