Get ready for a family-friendly, pedestrian-focused event on Saturday, September 12, 2026, from 10:30 a.m. - 3 p.m. that will transform Blue Hill Avenue in Mattapan, from River Street to Babson Street, into a vibrant, car-free boulevard where people can dream, play, and explore. Open Streets Boston in Mattapan will feature live music, food trucks, kid's activities, and much more!

(All Open Streets Boston events take place from 10:30 a.m. to 3 p.m. Streets will be closed to vehicular traffic starting at 9 a.m. and reopen at 4 p.m.

This event is part of a City Hall Plaza Event Series supported by the Mayor's Office of Arts and Culture. Stay tuned for event time and more details, coming soon!

This event is part of a City Hall Plaza Event Series supported by the Mayor's Office of Arts and Culture. Stay tuned for event time and more details, coming soon!

This event is part of a City Hall Plaza Event Series supported by the Mayor's Office of Arts and Culture. Stay tuned for event time and more details, coming soon!

This event is part of a City Hall Plaza Event Series supported by the Mayor's Office of Arts and Culture. Stay tuned for event time and more details, coming soon!

This event is part of a City Hall Plaza Event Series supported by the Mayor's Office of Arts and Culture. Stay tuned for event time and more details, coming soon!

This event is part of a City Hall Plaza Event Series supported by the Mayor's Office of Arts and Culture. Stay tuned for event time and more details, coming soon!

This event is part of a City Hall Plaza Event Series supported by the Mayor's Office of Arts and Culture. Stay tuned for event time and more details, coming soon!

Join BCYF lifeguards for a day of learning the importance of water safety. There will be an in-water activity, stations around the pool deck, DJ and activities for all. Family friendly and open to all ages.

Register Here

Mayor Wu’s Neighborhood Coffee Hours are a unique opportunity to speak directly with the Mayor and staff from City departments about open space and their neighborhoods. If there are inclement weather conditions, the time and location may change to an indoor location and will be reflected on boston.gov/events.

A neighborhood staple known for bringing the community together over a cup of coffee, Dunkin’ is back to fuel the conversation with iced coffee and donuts. Dunkin’ will also provide lawn game activities for attendees, gift card giveaways, and the opportunity for residents to win a raffle prize. Free flowering plants will be provided by the Boston Parks and Recreation Department and fresh fruit will be provided by Star Market, while supplies last.