Beauty is in the eye of the beholder, and from someone who can't even draw a stickperson properly, I  admire most types of paintings and like music find many quite inspirational. My favorites are those from the French Impressionists like Renoir, but I have been amazed at the talent in this field both old and new.
Here are a few links to some of my favorites and especially a link to a child prodigy and now young woman, whose paintings are unbelievable and quite spiritual.