The last full weekend before Halloween has something in every borough, from a corn maze in eastern Queens to telescopes pointed at Saturn in Inwood Hill Park. Here are six things to do in New York City from Friday, October 23, through Sunday, October 25.

Friday: Greenbelt's Haunted Trail, Staten Island

NYC Parks and Staten Island Recreation run a free Halloween afternoon at the Greenbelt Recreation Center on Friday, October 23, from 3 to 7 p.m., in the lower parking lot at 501 Brielle Avenue, across from Sea View Hospital. The afternoon has a pumpkin patch, pumpkin painting, crafts and games. New this year, the trail turns into a scarier after-dark version from 6 to 7 p.m. No registration is needed.

Friday and Saturday: candlelight ghost tours at the Merchant's House, Manhattan

The Merchant's House Museum at 29 East 4th Street, the home of the Tredwell family, runs candlelight ghost tours on Friday and Saturday nights, and again on October 29 and 30. The Tredwells lived in the house for nearly 100 years, and Gertrude Tredwell, the last of the family, was born there in 1840 and died there in 1933. The museum began formal paranormal research in 2020, while the building sat closed during the pandemic, working with investigator Dan Sturges, who has studied the house since 2007, and a neuroscientist, using equipment built for the house. The 50-minute tours present what they have found.

Tours start every half hour from 6:30 to 9 p.m. and cost $45, or $35 for members. A 90-minute tour led by Sturges starts at 9:30 p.m. for $70, or $60 for members. The 6 stops at Bleecker Street, and the B, D, F and M at Broadway-Lafayette.

Saturday: Fort Greene Park Halloween Fest, Brooklyn

The Fort Greene Park Conservancy's Halloween Fest fills Monument Plaza on Saturday, October 24, from noon to 4 p.m., with spooky stories, face painting and family games. From noon to 1 p.m., Fort Greene PUPS hosts the Great PUPkin Dog Costume Contest, free to watch. Admission is free with no RSVP, and the rain date is Sunday. The C stops at Lafayette Avenue and the G at Fulton Street.

Saturday night: Autumn Starfest in Inwood Hill Park, Manhattan

The Urban Park Rangers and the Amateur Astronomers Association set up telescopes at West 218th Street and Indian Road on Saturday from 7 to 10 p.m., weather permitting. The club's members bring the telescopes, and the targets include Jupiter, Saturn, craters on the Moon, star clusters and double stars. It is free. The 1 stops at 215th Street and the A at Inwood-207th Street.

Saturday and Sunday: the Amazing Maize Maze, Queens

Queens County Farm Museum in Floral Park bills its three-acre maze as New York City's only corn maze, and this is its second-to-last weekend; it closes November 1. Visitors start with a Stalk Talk, then solve clues on the way to Victory Bridge, which looks out over the whole field. The farm is marking 50 years as a nonprofit this year and has been farmed since 1697, on 47 acres at 73-50 Little Neck Parkway.

The maze is open Saturday and Sunday from 11 a.m. to 4 p.m. Tickets are $17 for adults, $10 for ages 3 to 11 and free for children 2 and under. Parking is free, and the Q46, Q36 and QM6 buses serve the farm.

Sunday: Wags to Witches at Van Cortlandt House, the Bronx

Van Cortlandt House Museum holds Halloween: Wags to Witches on Sunday, October 25, from 1 to 5 p.m. at Broadway and West 246th Street. The afternoon has crafts, face painting and spooky stories on the museum lawn, and at 3 p.m. its third annual Pup Parade and Canine Costume Contest, with dog registration on site from 2 to 2:45 p.m. At 6 p.m., the Urban Park Rangers lead a Nocturnal Creatures hike from the park's Nature Center, returning at 7:30. It is free. The 1 stops at Van Cortlandt Park-242nd Street.

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