Constitution Marsh Audubon Center and Sanctuary is a unique and beautiful 270-acre tidal marsh managed by Audubon as a wildlife sanctuary since 1970. It is located in Putnam County, New York on the east shore of the Hudson River, just south of the village of Cold Spring.

Our mission at Constitution Marsh Sanctuary is twofold: to provide stewardship to this fragile wetland and to teach others about it. We believe there is no substitute for a trip to the shoreline, where one can explore and discover the river first hand. Our goal is to give all visitors, whatever their age, the opportunity to closely observe river life and thus gain new insights into the natural world.

What to see at Constitution Marsh

The marsh is irreplaceable habitat and provides refuge to the wildlife of the Hudson River Estuary. Common breeding birds include Marsh Wren, Louisiana Waterthrush, Spotted Sandpiper, Virginia Rail and many others.

The Education Center exhibits are highlighted by a 500-gallon aquarium and a live video of nesting Eastern Phoebes (seasonal) that  allow you to come face to face with fish, crabs and other wildlife of the Hudson River. Our hiking trail lead to a 700-foot boardwalk that is accessible to families, birders, artists, or anyone who seeks to experience the natural side of the Hudson River Valley, and the lovely and popular Indian Brook waterfall.