Painting
For those beings that can see past the paltry optical color spectrum, this painting is the most beautiful ever made. The canvas is layered in ultraviolet hues, the sky in infrared paint. The landscapes are composed of submillimeter wavelengths, while the humans are in microwaves, the animals in radio waves. The naughty bits are visible only to those who can interpret x-rays, and the supernatural elements are in gamma rays. The most shocking part is done in gravitational waves; those who see it weep with one glimpse. But yeah, all you’re probably seeing is the crude line drawing of genitalia.