Reform Congregation Keneseth Israel is the sixth oldest Reform Jewish synagogue in the United States. It began in Philadelphia in 1847, and was at a number of locations in the city before building a massive structure on North Broad Street in 1891. In 1900 KI, as the Congregation is known, was one of the largest Reform Congregations in the United States. It remained at the North Broad Street address until 1956 when the Congregation moved north of the city to suburban Elkins Park, Pennsylvania.