- Boston Greenspace Alliance
Advocates for the protection and improvement of Boston’s green and open spaces.
- Boston Preservation Alliance
Preserves historic buildings, neighborhoods and landscapes in the city of Boston.
- The Esplanade Association
A nonprofit collaboration of citizens working to protect, restore, and beautify Boston’s historic Charles River Esplanade.
- Historic Boston Incorporated
Puts people and resources together to protect endangered historic sites in the city of Boston.
- South End Historical Society
Helps to preserve the architecture of the South End.
- Gibson House Museum
A Back Bay house with a well-preserved 19th-century interior
- Friends of the Public Garden
Works together with NABB to benefit the Commonwealth Mall, and also advocates for the Public Garden and the Common.
- Charles River Conservancy
Supports rehabilitation of the Charles River parklands, including the Esplanade.