Battery Park City Block Party After an eight-year hiatus, the  BPC Block Party is back. There will be a Cupcake Baking Contest (info at bpcblockparty24@gmail.com), a BPC trivia game, "Meet My Pet," a  kids area, bands, choruses and performances onstage, games and contests, as well as BPC vendors and restaurants. The event,  sponsored by the Battery Park City Authority, will be held on Sat., Sept. 21, 11am to 4pm on Esplanade Plaza next to North Cove Marina. Information at facebook.com/BPCBlockParty

Taste of the Seaport The annual food event returns on Saturday, Sept. 21 with more than restaurants and other concessions coming together to showcase what the organizers call the “culinary diversity” of Lower Manhattan. As always there will be live entertainment and a KidZone of activities. The event, a fundraiser for the Spruce Street School and the Peck Slip School, takes place on Piers 16 and 17 at 89 South St. Go here for more information.

Climate Week and Timber During Climate Week, learn about the policies, people and practices that are advancing mass timber ecosystems in the Pacific Northwest, Colorado, the Great Lakes Region and elsewhere. The Skyscraper Museum hosts a panel discussion presented by MassTimber@MSA and the Colorado Mass Timber Coalition. The discussion takes place Tuesday, Sept. 24 at 1pm at the museum, 39 Battery Pl. Go here for more information and to RSVP.

Women of the FDNY: Fighting Fires and Discrimination When the first women firefighters entered the FDNY Fire Academy in 1982, they fought not only fires, but an equal place in the department. On Sept. 19, 6pm, 9/11 Memorial & Museum President Beth Hillman, retired FDNY Captain Brenda Berkman, firefighter Regina Wilson and retired EMS Captain Doreen Ascatigno will discuss the evolution of women's roles in the FDNY. The program, at the 9/11 Museum, is free and requires registration. Register here. 

Constitution Day Celebrate the anniversary of the signing of the U.S. Constitution on Tuesday, Sept. 17, 5 to 7pm, with a symposium on the document and its ratification.On display will be a rare copy of the constitution—one of the 13 sent to the colonies for ratification and one of only eight that survive. At the U.S. Courthouse, 500 Pearl St. Sponsored by cultureNOW, the U.S. District Court of the District of New York, and the Lower Manhattan Historical Association. RSVP here by Sept. 10.

Community Board 1 September Calendar Brooklyn Bridge bike lane improvements; 5G tower installations; curbside composting and containerizations; homeless shelter at 320 Pearl Street

Senior Group Exercise and Zumba Strengthen the whole body from warm-up to cool-down with fun exercises done to music. Rhythmic movement and aerobics, balance and coordination exercises, as well as strength training. Free. Mondays, 10:30–11:30am. Tuesdays and Fridays, Adult Zumba from 10:30–11:30am. Easy-to-follow Latin dances. Work on your balance, coordination, and range of motion. Both at the Irish Hunger Memorial Plaza.