It's Open House New York weekend, and there's so much to see! NYC's landmarks open their doors for (mostly) FREE tours, and we've hand-picked a few of the best options for families in all five boroughs, including the Edgar Allen Poe Cottage in the Bronx, the Little Red Lighthouse in Manhattan, the Noguchi Museum and Gallop Sunrise Stables in Queens, Historic Richmond Town and the National Lighthouse Museum in Staten Island, and the Gowanus Dredgers Canoe Club in Brooklyn.

Meanwhile, we're running full speed toward Halloween in New York City, costumes flapping behind us, with Pumpkins and Potions on the Upper West Side and Pumpkin Point on Governors Island. Pet lovers can trot to Carl Schurz's Halloween Howl or Washington Square Park's Dog Day Halloween Costume Party and Parade, or pitch in at the Sean Casey Animal Howl-o-ween Bark Block Party. Museo del Barrio has you covered for Dia de los Muertos face painting and performances.

There are family-friendly fall festivals all over town this weekend, too: Saturday, head to the Harvest Festival in Brooklyn Bridge Park, the Red Hook Harvest Fest, Staten Island's 6th Annual fest at Clay Pit Ponds, Juniper Valley Park's Halloween Fest, Cooper Hewitt's Design Fest, or Atlantic Terminal Plaza's HarvestFest—complete with pony rides! On Sunday, it's Old Home Day in Historic Richmond Town, Harvest Homecoming (formerly Ghouls & Gourds) at Brooklyn Botanic, and Astoria's 4th annual Batty over Halloween bash.

Need a break from Halloween? Taste of the Seaport beckons on Saturday, with kid-friendly activities, live music, and food. The Little Orchestra Society kicks off its season this weekend with music from The Magic Flute. You can get a special sneak peek of R.J. Palacio's new graphic novel, White Bird, at Symphony Space.

As always, our October GoList features the month's best picks, and our Fall Fun Guide has the lowdown on seasonal must-dos. If you want to start planning for Thanksgiving or even December holiday events, dig into our Event Calendar.