There are just two windmills left standing out of the original dozen or more that would have started to occupy the Montmartre hillside from the 16th century onwards. 'Le Moulin Blute-Fin' and 'Le Moulin Radet' were built in the early 17th century and offer some picturesque, photographic opportunities when in Montmartre. The former is best shot in winter, when the tree leaves aren't obstructing your view, while the latter is nicely lit up at night.
'Le Moulin de la Galette' actually refers to both mills as a collective unit, so-called since the 19th century when windmill owners, the Debray family, decided to use the ground milled flour to make a type of flat brown cake or bread (known as a galette) that would be sold with a glass of wine on the premises.
During the late 19th century, 'Le Moulin Blute-Fin' (as it was originally entitled) was renamed to 'Le Moulin de la Galette' and became yet another popular entertainment venue for Renoir, Van Gogh, Lautrec and Picasso, remaining an integral part of history for the paintings it inspired some of these artists to produce. Renoir's 'Bal du Moulin de la Galette' is perhaps the most renowned example.
Today, it sits restored since the late 20th century on a private property situated along rue Lepic, still viewable from street level. Outside a plaque provides a brief historical synopsis of the windmill turned monument, mentioning the heroic efforts of three Debray's who were dismembered and nailed to the alleys of the mill in 1814 in a futile defense against the Cossacks during the last siege of Paris. It was the son who renovated the building into a ballroom thereafter, attracting the type of clientele for which it is so well-known.
Just around the corner on rue Girardon, the second windmill, 'Le Moulin Radet' can be observed atop the site of one of Chef Antoine Heerah's string of Montmartre restaurants, also named Le Moulin de la Galette.