Brattle Theatre

You can catch an Alejandro González Iñárritu flick at any multiplex nowadays, but you won’t see Boston Underground Film Festival highlights or a repertory series of World War II movies—or, for that matter, a weeklong Muppets marathon—anywhere else but the Brattle. The Harvard Square institution has been screening foreign, art house, and classic films for over 50 years, but it’s much more than a sleepy civic treasure: It’s holy ground for Boston’s cineastes, budding film auteurs, and anyone who just likes to watch Casablanca on the big screen.