The Romeo and Juliet Windmill in Spring Green, Wisconsin was designed by Frank Lloyd Wright at request of his aunts. They needed a way to pump water to their school, down the hill from the windmill. It is a very unique structure for a windmill and has an oversight balcony where you can look at the hillside. His aunts requested that it be a similar design to that of the schoolhouse which is where the shingles come into play. A very unique exterior with wooden shingles that match that of the roof of the school. The original siding was removed in 1938 and the tower was replaced in 1992.