Lacoste has been a site for human populations for many centuries thanks to its agricultural land, plentiful water supply and wonderfully sunny aspect that is also protected from the Mistral wind.
It had its fair share of plagues, wars and general thievery in the Middle Ages, but emerged in the 16th century as a relatively peaceful place where its inhabitants could prosper. Its famous castle was built at this time. It actually dates back to the 11th century but became famous when the property was bequeathed to the de Sade family in 1716.
During the following years, the castle was restored and gentrified. Donatien Alphonse Francois, better known as the Marquis de Sade (aristocrat, writer and revolutionary politician, infamous for his hedonistic lifestyle, scandals and imprisonment), inherited the castle in 1763 and lived there on and off until 1778. He was renowned for hosting debauched parties at the castle; he also created a 120 seater theatre and undertook many extensions and improvements.
The castle suffered during the French Revolution, when it was vandalised and its stones were used to build houses in the village. It wasn't until the 20th century that it began to undergo restoration under the guidance of Andre Bouer.
After his death in 1994, Pierre Cardin bought the estate in 2001 and continued the renovations. The castle is still largely a ruin, but it's possible to visit small areas of what's left. It hosts art exhibitions during the year, and an arts festival in July.