Despite its rich performance culture, Brooklyn remains underrepresented in theater history, eclipsed in fame by the well-known theaters of Manhattan. One of the most populous areas in America, Brooklyn has been an artistic home to actors, playwrights, directors, and impresarios for centuries. That said, there is a dearth of accessible information and scholarship on Brooklyn theaters. My objective was to update an ongoing mapping project, The City Performs, to include information and images of theater buildings from Brooklyn. The project is an interactive, open-source digital map that uses ArcGIS software to georeference data about NYC theaters. I collected data in library archives, unpublished dissertations, and internet databases, using multiple sources to assemble and verify all the necessary information. I found that Brooklyn theaters were a mainstay of affordable, popular entertainment, and many iconic acts and performers had their genesis in the borough. With these new additions in mind, The City Performs continues to be a valuable resource to theater scholars, educators, and anyone curious about New York history.