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.
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.
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.