Photo by Julian Ortiz.

LADIES: Celebrate the best women-owned businesses in Petworth during Ladies Night at Annie’s Ace Hardware. Activities planned for the evening include an in-store scavenger hunt, raffle drawings, a Power Tool 101 workshop, bike clinic, and upcycled crafting with ScrapDC. There will also be cats for adoption! Food and drink samples will be served. The gents can come too. Annie’s Ace Hardware (1240 Upshur Street NW) 6-8 p.m. Free.

DEVELOPMENT: This week’s edition of “Nerds in NoMa” will feature representatives from Edens, REI, Perseus, and JBG discussing future retail development in the neighborhood. Free beer and wine included. Sausages and brats from Federal City Brothers will be available for purchase. The Lobby Project (1200 First Street NE) 6-8 p.m. Free, but RSVP here.

CULTURE: Go Eat Give, a non-profit dedicated to promoting cross-cultural connection and understanding through food, travel, and community service, has arrived in D.C. At the launch event, meet founder and award-winning food and travel writer Sucheta Rawal, and learn about the volunteer trips currently scheduled in destinations including Cuba, Bali, and Italy. There will be a cash bar, light refreshments, and goody bag giveaways. Hierarchy (Upstairs-1847 Columbia Road NW) 6:30-9:30 p.m. Free.

WASHINGTON: Hear architect and historian Don Hawkins discuss the Washington “that once was and might have been,” as the Smithsonian Associates host “Unbuilt Washington: Alternative Visions.” S. Dillon Ripley Center (1100 Jefferson Drive SW) 6:45-8:15 p.m. $20-25.