Direct view
The right-hand panel is a real duplicate of the left, passed through an SVG displacement filter. Moving the pointer over the glass pushes the image around as though it were behind thick, uneven glass; the scale and chroma controls change how far it bends and how much colour it splits.
Mirrors in this building work the same way — a silvered surface that is never quite flat, reflecting a room that is never quite there. The difference is that a real mirror remembers a little of what it has seen, and this one remembers nothing at all.