TheLouvreisasymbolofPairsandoneoftheworld'sfinestmuseumshousedinthebiggestpalaceinEurope.Today,some10millionvisitorsstrollthroughits14kilometresofgalleriesandcorridors,whicharecarefullylaidouttoaccommodatemorethan40,000worksofart.Whatchangeshavebeenmadeoverthepast800yearstotransformachateauintoamuse...