In the 1970s, if you walked the length of Boylston Street, you would pass by or within a block of: the Pilgrim (porn), State (porn), Center/Pagoda (Chinese), Essex (Chinese), Publix (third-run exploitation), Astor (exploitation), Saxon (first-run), Garden (art/foreign), Park Square (revival), Paris (first-run), Cinema 733 (revival double-feature), Exeter (art/foreign), Pru (porn), and Cheri (first-run).
Walk a couple more blocks away from Boylston and you'd also find the Savoy (first-run), Stuart (third-run exploitation), Paramount (porn?), Mayflower (porn?), Music Hall (first-run and rock concerts), Gary (first-run), Cinema 57 (first-run). I'm probably forgetting some.
A few of these are now live stages (Savoy -> Opera House, Cinema 57 -> Stuart Street Playhouse, Saxon -> Majestic, Music Hall -> Wang), but most are just gone now as entertainment venues.