770 Eastern Parkway (), also known as "770", is the street address of the World Headquarters of the Chabad-Lubavitch Hasidic movement, located on Eastern Parkway in the Crown Heights section of Brooklyn, New York, in the United States. The building is the center of the Chabad-Lubavitch world movement, and considered by many to be an iconic site in Judaism. History The house, in Collegiate Gothic style, was built in 1920, designed by Edwin Kline, and originally served as a medical office. In 1940, with the assistance of Jacob Rutstein and his son Nathan Rothstein, the building was purchased by Agudas Chasidei Chabad on behalf of the Chabad Lubavitch movement and as a home for Rabbi Yosef Yitzchok Schneersohn when he arrived in the United States in 1940: as Rabbi Schneerson used a wheelchair, a building with an elevator needed to be purchased for his use as both a home and as a synagogue. During the 1940s, the building, which soon became known as 770, became the hub and central location for Chabad. It served as the main Chabad synagogue, a yeshiva, and offices for the Merkos L'Inyonei Chinuch. Rabbi Yosef Yitzchak Schneersohn lived in an apartment on the second floor. When Rabbi Menachem Mendel Schneersohn arrived from Vichy France to New York in 1941, his father-in-law appointed him as chairman of Merkos L'Inyonei Chinuch. The younger Rabbi Schneerson's office was located on the first floor of 770, near the synagogue. After Yosef Yitzchok's passing in January 1950, his son-in-law and successor, Menachem Mendel Schneersohn, continued to use his own office on the main floor to lead the movement, while maintaining his personal residence on President Street, several blocks away. Yosef Yitzchok's wife remained resident in her apartment on the second floor until her death. Her two daughters would often visit her in her apartment, and during her lifetime the new Rebbe would conduct semi-private meals there for the family and selected visitors on festive occasions. Today, the previous Rebbe's apartment and office are closed to the public. Since 1994, Rabbi Menachem Mendel's office on the first floor is used on Shabbat and Jewish holidays as an additional prayer room open to the public during prayer times. From its inception the synagogue has served three parallel purposes. It is a place of daily prayer services, a study hall for advanced students, and an assembly hall for Chabad gatherings, known as Farbrengens.