10 am – 4 pm Sculpture in the Garden: Sarah Sze at Landcraft Gardens Art Environment Landcraft Garden FoundationMattituck
10 am – noon AMSEAS Beach Walk & Cleanup at Hallock State Park Animals Community Hallock State Park PreserveRiverhead
10:30 am – noon Docent Tours in the Landcraft Garden Environment Outdoors Landcraft Garden FoundationMattituck
1 – 4 pm Tour the Rocky Point Hallock Homestead Museum Free History & Culture Rocky Point Hallock Homestead MuseumRocky Point
6 – 9 pm Spooky Fest Ages: AllAttractions Craft & DIY Family Center for Science Teaching and Learning-Tanglewood PreserveRockville Center
9 am – noon Walk to End Alzheimer’s – North Babylon Free Fundraisers Belmont Lake State ParkNorth Babylon
9 am – noon Walk to End Alzheimer’s – Yaphank Free Fundraisers Suffolk County Farm & Education CenterYaphank
6 – 9 pm Spooky Fest Ages: AllAttractions Craft & DIY Family Center for Science Teaching and Learning-Tanglewood PreserveRockville Center
Today, 2 pm LOUISE EASTMAN & JANIS STEMMERMANN: Black and White and Red All Over Arts Center at Duck Creek
Today, 6 pm I Say Potato – A Multimedia Art Exhibition Exploring the Humble Tuber’s Deep Roots in Long Island’s Cultural Soil The Nathaniel Rogers House
Today, 6 pm From Plankton to Whales- Why Our Local Waters Are Worth Protecting Sag Harbor Whaling & Historical Museum