Usually, if I write about art (architecture, sculpture, painting), it is about modern art. Medieval churches and Renaissance castles, impressive as they are, are for me less interesting to write about.
I am making an exception for mills. Fueled by the interest of Australian family and American friends, I find the technology and function of mills as fascinating as the design of modern architecture.
Since the Middle Ages, the low countries have fought against the water and Dutch windmills played a major role in this.