Beauty

Beauty is state of something, when it is appealing aesthetically, morally, and emotionally.

This can be on a continuum. That is, something could be a little beautiful (in which case someone might pick a milder word) or it could just be beautiful, or it could be astonishingly beautiful, so much so that it dramatically changes your mental state in a positive way (a more appropriate word for this sort of beauty might be awe).