Where: Empire Stores, 53-83 Water St., DUMBO
When: Friday, noon to 6 p.m., Saturday and Sunday, 10 a.m. to 7 p.m.
The Brooklyn Historical Society is offering free admission to toast its new outpost in Empire Stores, the recently restored 19th century warehouse in Brooklyn Bridge Park. Its inaugural exhibit, “Shifting Perspectives: Photographs of Brooklyn’s Waterfront,” taps its collection of modern and contemporary photographs celebrating the borough’s waterfront.
Friday, May 19
Where: Pearl Street Triangle, on Water Street between Pearl Street and Anchorage Place, DUMBO
When: 6 to 10 p.m.
For the fifth annual “Bike Home from Work” party organized by advocacy group Transportation Alternatives for Bike Month, expect a very hip Brooklyn experience: a beer garden, food trucks, interactive exhibitions, a DJ and, yes, even a tattoo shop. There will also be a free bike valet.
Saturday, May 20
Where: Various locations
When: 11 a.m. to 4 p.m.
See the studios and work of more than 35 local artists as well as public interactive exhibits in the 17th annual Art Walk in Fort Greene and Clinton Hill. The event is hosted by the Myrtle Avenue Brooklyn Partnership and FAB Alliance and will be on exhibit through June 21.
Where: Meet outside the Brooklyn Public Library at 4th Avenue and 95th Street, near the final stop of the R train at 95th Street
Forgotten New York leads a trek through Bay Ridge of sights featured in “Saturday Night Fever,” which celebrates its 40th anniversary this year. The cost is $20.
Where: Automotive High School, 50 Bedford St.
When: Noon to 5 p.m.
Enjoy a free, kid friendly “Festival of Curiosity” with a Physics Bus, a maker lab, rides on a leaf blower hovercraft and more.
►Waterfront Ice Cream Bike Ride
Where: Starts at Time’s Up in South Williamsburg at 99 S. 6th St.
When: 4 to 6 p.m.
Explore waterfront parks along the East River, learn about the marine ecosystems that thrive there and eat ice cream along the way with this guided bike tour.
Where: The Way Station, 683 Washington Ave., Prospect Heights
When: 4 to 8 p.m.
Everyone’s favorite geeky local bar, the "Dr. Who"-themed Way Station, is hosting a nerd-tastic singles speed-dating event for people into sci-fi and fantasy. Well drinks are $4 and everything else is $1 off.
Where: Kingston Avenue from St. Marks Avenue to Dean Street, Crown Heights
When: 1 to 5 p.m.
Enjoy live music, dance performances, food, arts and crafts, a bouncy house, face painting and an anti-violence art display at this family-friendly festival put on by the Crown Heights Mediation Center. The event is free and open to the public and will take place rain or shine.
Where: Malcolm X Boulevard between Halsey and Chauncey streets
When: 3 to 8 p.m.
Chow down, drink up, and explore food and drink specials at businesses along Malcolm X Boulevard, all to raise money for the Weeksville Heritage Center.
Where: Caribbeing House, 794 Flatbush Ave., Flatbush
When: 5 to 6 p.m.
Get moving at this free outdoor Wukkout exercise class, a workout routine based on Caribbean dancing. Refreshments will be provided.
Where: Secret Project Robot, 1186 Broadway
When: 6 p.m. until late.
Join Secret Project Robot for their first music show in their new Bedford-Stuyvesant location with a line up more than thirty performers and DJs kicking off at 6 p.m. Saturday evening.
Sunday, May 21
Where: Sterling Place to 12th on 5th Avenue.
When: 10 a.m. to 6 p.m.
The street fair will feature music, dance and family-friendly mini-classes throughout the day.
Where: Berg’n, 899 Bergen St., Crown Heights
When: 11 a.m. to 4 p.m.
Learn about how soil is linked to good nutrition at this yearly food-focused conference hosted by the local CSA group Local Roots. Have lunch with a farmer, learn about reducing food waste or take part in a cooking demonstration. Tickets start at $25.
This column was compiled by DNAinfo's staff Gwynne Hogan, Rachel Holliday Smith and Noah Hurowitz, Amy Zimmer and Amy Langfield.