The brain, on a bigger scale looks a little ugly, like a giant old walnut, but, look at it under a microscope and you are surprised how beautiful and vivid it is, how many different cells there are!
Our brain is where the world happens. Everyone has a different perception of the world, depending on their body and experience and eventually, it is all in your head.
For me, the world, the brain, a neuron, it is all one big infinite loop! You can find similar structures everywhere, cells can even commit suicide, how crazy is that?