(https://visual.ly/blog/wp-content/uploads/2013/09/3d-618×624.jpg)

I think that this visualization is really gool in that it shows all of the pieces of the pie chart as their original size, and are layered so that they do not overlap each other, making it relatively clear which pieces are bigger and smaller. I haven’t seen a visualization take advantage of space in terms of moving a pie chart vertically, so this is really cool.