Le Kremlin-Bicêtre is a commune in the southern suburbs of Paris, France. It is 4.5 km from the center of Paris. It is one of the most densely populated municipalities in Europe. Le Kremlin-Bicêtre is most famous as the location of the Bicêtre Hospital, where Superintendent Philippe Pinel is credited as being the first to introduce humane methods into the treatment of the mentally ill, in 1793. Its most notorious guest was the Marquis de Sade.