COLUMBIA COUNTY

October 31

10 a.m.: Halloween Hike. Costumes are encouraged. Olana State Historical Site, parking lot behind the house, Route 9G, Hudson; (518) 248-2579.

DUTCHESS COUNTY

October 31

11 a.m.: Goowin’s Balloowins’ HalloweenTales. Enjoy a truly unique performance by madcap balloon artist Allynn Gooen. Dutchess Community College, James and Betty Hall Theatre, 53 Pendell Road, Poughkeepsie; (845) 431-8050.

11 a.m.: Halloween 5K Fun Run and Trick-or-Treating. Registration starts at 10 a.m. No registration fee, but donations to Family Services Crime Victims is encouraged. Children’s costume parade and contest begins at 12 noon. Vassar College, north parking lot, Poughkeepsie.

GREENE COUNTY

Saturdays-Sundays

12 noon-8 p.m.: Zombie Hunter Wars. This theatrical interactive 30-minute experience wages war against the zombies. Work with our soldiers to eliminate the zombies (live and animated) and clear the town by shooting them while sitting in a Zombie Hunter Vehicle using a mounted paintball maker. Ages 8 and up. Hunter Mountain, Hunter; (518) 263-4388.

ORANGE COUNTY

October 31

11 a.m.-3 p.m.: “I Spy” Halloween Trail. Find all the objects cleverly hidden along the “I Spy” Halloween Trail. Admission is free. Outdoor Discovery Center, Muser Drive, Cornwall; (845) 534-5506, ext. 204.

PUTNAM COUNTY

October 28- November 1

7 p.m.: Two spine-tingling radio plays: The Hitchhiker and Sorry, Wrong Number. Hudson Valley Shakespeare Festival actors and Foley artists will transport you back to the classic age of radio drama while haunting you in the intimate setting of the mansion. $50/$70. Boscobel Mansion, Route 9D, Garrison; www.hvshakespeare.org/whats-playing/suspense-halloween-radio.html.

SULLIVAN COUNTY

October 31

12 noon: Second annual Trick-or-Treat at the Museum. Join the bewitched treasure hunt! Bethel Woods Center for Arts, 200 Hurd Road, Bethel; (866) 781-2922.

 2 & 4 p.m.: Hocus Pocus. Join us for a little Halloween fun as we show Hocus Pocus and a bewitched treasure hunt. Museum at Bethel Woods, 200 Hurd Road, Bethel; (866) 781-2922.

3-6 p.m.: Halloween Trunk or Treat in the Park. Lineup begins for the Jeff Lions Club Halloween Parade on Main Street and ending at the firehouse for costume judging. Backyard Park, 876 Swiss Hill Road, Jeffersonville.

WESTCHESTER COUNTY

October 15-November 15

Great Jack O’Lantern Blaze. See over 7,000 illuminated jack-o’-lanterns. Also see the pumpkin planetarium, a circus train and the flying pumpkin ghosts. Every Thursday-Sunday. Tickets required. $25/$20, free/kids under 3. Van Cortlandt Manor, South Riverside Avenue, Croton-on-Hudson; (914) 366-6900.