Free tours and tastings at the brewery between 10 a.m. and 3 p.m. Mon. - Thurs., plus Saturdays (the tours leave every 45 minutes or so). On Fridays, tours continue through 5:30 p.m.
Free tastings in theSouth Boston Waterfront brewery weekdays are at 4 p.m.; there is an additional tasting at 2 p.m. on Wednesdays, Thursdays, and Fridays. Read more.
The empty expanse is livened up by free concerts sponsored by the city on summer Wednesday evenings. Read more.
The Tango Society of Boston’s Tango by Moonlight event is now in its 16th season. Half-hour lessons start at 7:30, and open dancing goes till 11. bostontango.org
Free tours of the Arnold Arboretum Saturdays at 10:30, Sundays at 1 p.m., and Wednesdays at 12:15 p.m. through November. arboretum.harvard.edu
Though some events are free to members only, the Old South Meeting House also hosts free ones for nonmembers. 617-482-6439, oldsouthmeetinghouse.org
Shakespeare on the Common performances here are always fun. In 2012, "Coriolanus" will be performed from July 25 - August 12,Tuesdays-Saturdays 8pm & Sundays 7pm. Read more.
It costs money to join, but this private library offers free tours of its treasures on Tuesdays and Thursdays at 3 p.m. Reservations required. Meet at the circulation desk. 617-227-0270, ext. 279 Read more.
Enjoy strolling Olmsted's parks any day of the week. Or try one of the free walking tours, Sundays, 1 to 2:30 p.m., through October. Read more.
With more than 450,000 works, the MFA can keep you busy for a lifetime of Wednesdays, when it's free from 4 to 9:45 p.m. Read more.
