What is the origin of beauty? Why is it that things are sometimes beautiful? I will try to answer my question and you are welcome to comment.
I have found a common factor to the phenomenon of beauty: The extent by which the object seems to be designed thoughtfully. The more an object gives this impression the more it will be beautiful.
This is of course, not scientific, but many examples confirm this theory.
Again, the more there is an impression that there is a "thought behind" the object, the more the object will be beautiful.