Garrison is a hamlet in Putnam County, New York, United States. It is part of the town of Philipstown, on the east side of the Hudson River, across from the United States Military Academy at West Point. The Garrison Metro-North Railroad station serves the town.The Garrison train wreck occurred near Garrison on the Great Hudson River Railway on October 24, 1897, killing 20 people.For the 1969 film Hello, Dolly! starring Barbra Streisand, Garrison was the filming location for the Yonkers scenes.