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The Park Avenue Synagogue – Agudat Yesharim- (The Association of the Righteous) is a Conservative congregation located at 50 East 87th Street on the Upper East Side of Manhattan in New York City. Founded in 1882, the congregation is one of the largest and most influential congregations in American Conservative Judaism.
The congregation was originally founded in 1882 as "Temple Gates of Hope", a Reform congregation, by a group of German Jews. After several mergers, the congregation took the Hebrew name "Agudat Yesharim," and later petitioned the state of New York to change the official name of the congregation to "Park Avenue Synagogue" in 1923. In 1927, the present Moorish-style building on East 87th Street was constructed. By the 1930s, the congregation changed its affiliation from Reform to Conservative to accommodate the merger of the congregation with several other congregations containing large numbers of Eastern European Jews.