The Birches is a house at the southeast corner of the junction of NY 9D and 403 in the hamlet of Garrison, New York, United States. It was built for William H. Osborn, as part of his nearby Wing & Wing estate, by architect Ralph Adams Cram in the Gothic Revival architectural style. Osborn was a 19th-century railroad tycoon, who became one of the most prominent railroad leaders in the United States. In addition to Wing and Wing and the Birches, Osborn famously constructed Castle Rock, his great summer estate overlooking the Hudson River.