Leopold Eidlitz was an American architect best known for his work on the New York State Capitol, as well as "Iranistan" (1848), P. T. Barnum's house in Bridgeport, Connecticut; St. Peter's Church, on Westchester Avenue at St. Peter's Avenue in the Bronx (1853); the Brooklyn Academy of Music on Montague Street in Brooklyn ; the former Temple Emanu-El ; the Broadway Tabernacle ; the completion of the Tweed Courthouse (1876–81); and the Park Presbyterian Chapel on West 86th Street and Amsterdam Avenue.

The New York State Capitol, the seat of the New York state government, is located in Albany, the capital city of the U.S. state of New York. The capitol building is part of the Empire State Plaza complex on State Street in Capitol Park. Housing the New York State Legislature, the building was completed in 1899 at a cost of US$25 million, making it the most expensive government building of its time. It was listed on the National Register of Historic Places in 1971, then included as a contributing property when the Lafayette Park Historic District was listed in 1978. The New York State Capitol was declared a National Historic Landmark in 1979.