The Harbor Road boardwalk entrance will be closed beginning February 1 as we restore and renovate the habitat. Trails east of Rhododendron Road, including the labyrinth, will be inaccessible. The remainder of the trails will be open and can be accessed from Shep Jones Lane where alternate parking is available.

The boardwalk entrance is located at 200 Harbor Road, Stony Brook, NY.

Parking is available along Main Street, on Harbor Road, and in the shopping center just past the Preserve on Main Street.


Avalon Nature Preserve is free and open to the public.

Make the most of your visit. Explore our trails through five distinct habitats.

Download Map

See what’s happening at Avalon.

Register for yoga or mindful meditation classes, learn more about the universe with our monthly Skylab events or join a nature walk with the Audubon Society.


We believe that no child is too young to begin a connection to the natural world.

Check out Avalon’s great offerings for kids of all ages.

Youth Programs