Don Quixote's Windmills
These are said to be the very windmills which Cervantes had in mind when he sent his knight errant, Don Quixote, into the attack. The crazy story-book character mistook the line of mills for a band of evil giants. Hence, people who make a big argument about nothing are sometimes said to be "tilting at windmills".
Consuegra, Castilla la Mancha