The authorities of medieval Paris attempted to confine prostitution to a particular district. Louis IX (1226–1270) designated nine streets in the Beaubourg Quartier where it would be permitted. In the early part of the 19th century, state-controlled legal brothels (then known as "maisons de tolérance" or "maisons closes") started to appear in several French cities. By law, they had to be run by a woman (typically a former prostitute) and their external appearance had to be discreet. The maisons were required to light a red lantern when they were open (from which is derived the term red-light district and the prostitutes were only permitted to leave the maisons on certain days and only if accompanied by its head. By 1810, Paris alone had 180 officially approved brothels.