GBCA works to create a cohesive cultural community that strengthens the Greater Baltimore region. 120 W. North Ave. Suite 305 GBCA works to create a cohesive cultural community that strengthens the livability and economic vita Greater Baltimore Cultural Alliance (GBCA) creates equity and opportunity In, Through, and For arts and culture in Greater Baltimore. Whether they are emerging or established, mainstream or underground, grassroots or institutional, GBCA believes in unifying and strengthening all members of the creative community. We do this through marketing, education, financial support, and developing innovative programs that increase equity in the cultural community and beyond.