Is not super creepy, but it has left a lasting impression on me.
I was five or six years old, I was visiting my aunt during a cold Winter afternoon. After spending some time inside my aunt's house, I got bored and wandered off to her backyard, next to it there was a short building, two or three stories tall. I looked at one of the balconies, I think it was the second one, when I saw two strange looking people, they were all white, albino like, but their skin was glistening, like lizards, they hair was short white also. At first I thought one of them waving at me, the other was behind him, like realizing a weird variation of the Heimlich maneuver. Or perhaps they were having sex? I don't know, I got freaked out and quickly entered the house. In a couple of days I forgot about it, till they began appearing in my dreams for some time till it stopped.
Months later, when I went back to my aunt's house, I asked her casually about the building, she told me it was an failure of a development and would soon be closed. Nobody had lived there in years.
The building was demolished shortly afterwards.
I'm still haunted by those weird white figures, things, people, I couldn't even distinguish if they were male and female, or what.