5th grade artsits studied the art and architecture of Freidrich Hundertwasser. They noticed the way he used organic shapes, interesting colors and no straight lines. He wanted all his building to be unique and incorporated nature into his buildings as well by growing grass and plants on the roofs and letting the trees grow right up through the roofs! He also became famous for his "lollipop trees" - trees that look like lollipops.
Check out the you tube links below to see some of Hundertwasser's work: