Who built the both the Union Church of Pocantico Hills and and Kykuit?
Union Church of Pocantico Hills: Union Church of Pocantico Hills is a historic church located at 555-559 Bedford Road in Pocantico Hills, New York. Union Church of Pocantico Hills:  The church was built by John D. Rockefeller, Jr. in 1921, as part of his plans to develop the town of Pocantico Hills, which was below his estate Kykuit.
i don't know