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NOTICE: Today's Event has been RESCHEDULED. Check details on the Events page.
Membership Only Events
Events are for members only unless otherwise indicated.
Please RSVP. For details, contact us at 201-784-0484 or email us at pnanaturalist@gmail.com.
Upcoming Events
Multiple Dates
2 days to the event
Sep 12, 2026, 12:00 PM – 3:00 PM
Join us at Arboretum Point as we look for migrating hawks and other birds moving south along the Hudson River.
Come when you want, leave when you want. Binoculars and/or field scopes are recommended.
Multiple Dates
9 days to the event
Sep 19, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook's Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members may
bring a friend
Multiple Dates
9 days to the event
Sep 19, 2026, 12:00 PM – 3:00 PM
Join us at Arboretum Point as we look for migrating hawks and other birds moving south along the Hudson River.
Come when you want, leave when you want. Binoculars and/or field scopes are recommended.
Multiple Dates
16 days to the event
Sep 26, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook's Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members may
bring a friend
Multiple Dates
16 days to the event
Sep 26, 2026, 12:00 PM – 3:00 PM
Join us at Arboretum Point as we look for migrating hawks and other birds moving south along the Hudson River.
Come when you want, leave when you want. Binoculars and/or field scopes are recommended.
16 days to the event
Sep 26, 2026, 6:30 PM – 8:00 PM
Enjoy the beauty of an Autumn night in Greenbrook by the light of a full moon. If the weather is good, we will watch
the Full Moon rise over the Hudson River. Bring Flashlights.
17 days to the event
Sep 27, 2026, 12:00 PM – 3:00 PM
An open house to introduce the sanctuary to non-members. Including guided short walks and informative talks that
help explain and describe this gem on the Palisades.
Multiple Dates
23 days to the event
Oct 03, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook's Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members may
bring a friend
Multiple Dates
23 days to the event
Oct 03, 2026, 12:00 PM – 3:00 PM
Join us at Arboretum Point as we look for migrating hawks and other birds moving south along the Hudson River.
Come when you want, leave when you want. Binoculars and/or field scopes are recommended.
24 days to the event
Oct 04, 2026, 12:00 PM – 3:00 PM
See September 27 for description of “Visitor’s Day.
Multiple Dates
30 days to the event
Oct 10, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook's Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members may
bring a friend
Multiple Dates
30 days to the event
Oct 10, 2026, 12:00 PM – 3:00 PM
Join us at Arboretum Point as we look for migrating hawks and other birds moving south along the Hudson River.
Come when you want, leave when you want. Binoculars and/or field scopes are recommended.
31 days to the event
Oct 11, 2026, 10:00 AM – 12:00 PM
Guided hike highlighting many historical structures in Greenbrook Sanctuary. This hike covers about 3 miles round-trip in about 2 hrs on moderate trails. Hike will be held "drizzle or shine.” Heavy steady precipitation or icy trail conditions will cancel call 201-768-1360 and ext. 6108 to confirm.
Multiple Dates
37 days to the event
Oct 17, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook's Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members may
bring a friend
Multiple Dates
37 days to the event
Oct 17, 2026, 12:00 PM – 3:00 PM
Join us at Arboretum Point as we look for migrating hawks and other birds moving south along the Hudson River.
Come when you want, leave when you want. Binoculars and/or field scopes are recommended.
42 days to the event
Oct 22, 2026, 7:00 PM – 8:00 PM
Join us in the auditorium at Fort Lee Historic Park for organizational updates, sanctuary news, and elections.
Followed by a presentation by Jim Wright on his new book, “The Peregrine Falcon.” with book signing. Please RSVP by calling the Sanctuary 201-784-0484 by October 20, 2026.
Multiple Dates
44 days to the event
Oct 24, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook's Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members may
bring a friend
44 days to the event
Oct 24, 2026, 1:00 PM – 2:30 PM
Hike from the most southern vista, Patriots Leap, to the most northern, Bald Eagle Point. This a is a long hike on
rocky trails, with many hills and valleys, but the views are spectacular.
58 days to the event
Nov 07, 2026, 1:00 PM – 2:30 PM
A walk that completely circles Greenbrook Pond.
65 days to the event
Nov 14, 2026, 10:00 AM – 12:00 PM
We will be clearing unwanted and old vegetation from the bog. The conditions are wet and muddy.
Please wear durable outdoor clothes and shoes. Don’t forget a good pair of work gloves.
Membership is required to enjoy our park as well as all the events.
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