Louvre Palace the museum from the main reception area under the glass pyramid, the north part of the complex is now referred to as the Richelieu wing; the east, as the Sully wing; and the south, as the Denon wing. This allows the casual visitor to avoid (to some extent) becoming totally mystified at the bewildering array of named wings and pavilions. The origin of the name "Louvre" is unclear. The French historian Henri Sauval, probably writing in the 1660s, stated that he had seen "in an old Latin-Saxon glossary, Leouar is translated castle" and thus took Leouar to be the origin
Paris in the Middle Ages not have an efficient system of covered sewers until Napoleon built them at the beginning of the 19th century. Street lighting was almost nonexistent in the Middle Ages. In 1318, it was recorded that there were just three street lanterns in Paris: one candle in a lantern outside the entrance to the Châtelet fortress; a candle outside the Tour de Nesle to indicate its entrance to boatmen; and a third lantern outside the Cemetery of the Innocents to remind passers-by to pray for the souls of the deceased. Very little light came from houses, since glass windows were extremely rare;