The most memorable horror came when DH and I were looking for a rental. We viewed a house that still had tenants in it, but they were moving out of state. Every room was... unique, but the two memorable rooms were one bedroom and the kitchen.
The bedroom in question was in the basement, and was inhabited by a young teen girl. All of the walls were black, and the carpet was dark grey. The walls were also hung with rainbow-hued mesh scarves, each embellished with beads, and all available surfaces were covered with resin sculptures, along the lines of skulls with various wanna-be pagan designs, dragons, incense burners in the shape of nymphs, and other fantasy items. There were multiple scented candles burning, each clashing with the other. It looked like someone was transitioning between Goth/Gypsy/RenFaire.
The kitchen was truly unique. I actually don't remember much about the appliances, or the space, because I was too busy looking at the walls. At first I thought that the walls were mirrors, all the way around. Then I looked closer, and discovered that the wallpaper was in fact wrapping paper. Remember in the 70s, when mylar mirror-reflection wrapping paper was a fad? That's what was on the walls. A close look revealed a pastel clowns-and-balloons pattern, and the tape marks where the ends of the roll met.
At this point, DH and I silently agreed that it was the opposite of a rental- someone would have to pay us to live there. So we quietly left.