Boston Calling Music Festival is a Boston-based music festival. The festival debuted in May 2013 and previously took place twice a year, May and September, at City Hall Plaza. The festival reportedly attracted 20,000–22,000 fans with its earlier editions, eventually drawing roughly 40,000 festival goers in 2017. In May 2016, Boston Calling announced it would move to the Harvard Athletic Complex in Allston in May 2017 and transition to one festival per year, with the new space allowing the addition of more music stages and the inclusion of stand-up comedy performers.

City Hall Plaza in Boston, Massachusetts, is a large, open, public space in the Government Center area of the city. The architectural firm Kallmann McKinnell & Knowles designed the plaza in 1962 to accompany Boston's new City Hall building. The multi-level, irregularly shaped plaza consists of red brick and concrete. The Government Center MBTA station is located beneath the plaza; its entrance is at the southwest corner of the plaza.