“Jazz Lunch” Free performances at Bogardus Plaza, Hudson Street, between Chambers and Reade, Wednesdays in October, 12:30 to 2 pm., presented by Friends of Bogardus Plaza.

Scavenger hunt Also from Friends of Bogardus Plaza, The Great Tribeca Scavenger Hunter returns for the 10th year on Oct. 18, from 3 to 4:30 pm. Teams race around the neighborhood searching for clues, completing missions and answering trivia questions to win prizes totaling over $1,800. Proceeds benefit the plaza. Go here to buy tickets.

The Longest Table Gotham Park hosts this free community potluck on Sunday, Oct. 18, from 1 to 3 pm, bringing together people from all the Downtown neighborhoods. Guests are invited to contribute a dish, drink or centerpiece to share at the event. Live Latin-jazz music by Sing for Hope plus kids activities by StreetLab. Gotham Park is located beneath the Brooklyn Bridge at 1 Rose St. Go here for more information and to register.

Spooktacular brings a high-flying circus of vampires, skeletons, and acrobatic cats to the Tribeca Performing Arts Center on Sunday, Oct. 18, at 3 pm. Go here for tickets and more information.

Barn dance Swing and square dancing come together in Wagner Park on Saturday, Oct. 17 at 5 pm. Brooklyn Contra, a non-profit organization, teaches a style of community folk line dancing, accompanied by live music.

“What We  Have Learned: Art, Place, and Mass Trauma” is a discussion and exhibit at 3 World Trade Center with architect Miguel Arraiz, artist Todd Stone, and Clifford Chanin, 9/11 Memorial & Museum director. They will talk about the topic in the context of grief, memory, and the process of rebuilding. The event, on Thursday, Oct. 29. from 5 to 7 pm, takes place on the 71st floor, where Stone’s paintings of the World Trade Center, before, during, and after 9/11, are on display. Advance registration here is required. Above: “Fall-Memorial, 2019” by Todd Stone.

Remembering the original World Trade Center In its permanent collection, the Skyscraper Museum offers photographs, film, and models of the tTwin Towers, covering both its history and the rebuilding of the site after 9/11. A mural 25-feet long and 11-feet tall includes timelines, construction views and master plans.

Art from other planes of consciousness “Conduits of the Unseen: Women Artists Imagine Other Worlds” brings together 17 20th century artists whose other worldly influences included alternate realities, spirits, cosmic forces, and more. The exhibition is anchored by the work (including the above painting) of Paulina Peavy, an artist known for channeling her inspiration through a spirit guide. Sept. 9 to Oct. 31 at Andrew Edlin Gallery, 292 Broadway, 2nd Floor.