Since 2017, Chat Travieso, past Participatory Design Fellow of Design Trust's Under the Elevated project, has been working on a research entitled, A Nation of Walls, investigating the history of segregation walls, fences, road barricades, and buffer strips—physical barriers constructed throughout the United States to separate black and white communities. Mr. Travieso is in the process of developing an interactive website to present his research, map these structures, and provide a platform for community members to share their stories. This article offers an overview of his process and some of his findings. The research is supported by Graham Foundation for Advanced Studies in the Fine Arts, and the New York State Council on the Arts with the support of Governor Andrew Cuomo and the New York State Legislature with fiscal sponsorship from Storefront for Art and Architecture.