During the Middle Ages, Paris was a center of Jewish learning with famous Talmudic scholars, such as Yechiel of Paris who took part in the Disputation of Paris between Christian and Jewish intellectuals. The Parisian Jewish community was victim of persecution, alternating expulsions and returns, until France became the first country in Europe to emancipate its Jewish population during the French Revolution. Although 75% of the Jewish population in France survived the Holocaust during World War II, half the city's Jewish population perished in Nazi concentration camps, while some others fled abroad. A large migration of North Africa Sephardic Jews settled Paris in the 1960s, and represent most of the Paris Jewish community today. There are currently 83 synagogues in the city; The Marais-quarter Agoudas Hakehilos Synagogue, built in 1913 by architect Hector Guimard, is a Paris landmark.