Originally Posted by StephenHero
I've heard museums hang paintings at 5'6" through the middle of the painting, the average eye level of an adult man. I can't verify.
I believe this is right. I know they hang for the eye level of the average height male, but I don't know the level. In a home it is different, both because you are not hanging for the average person, and because you might want to create some sort of visual effect separate from being properly hung.