Interested in how decolonization can address issues of environmental degradation and create pathways towards environmental justice, this Thesis investigates the agency of architecture to combat issues of social injustice in Boston. LANDBACK learns from Indigenous perspectives on environmental stewardship and decolonization, which is the return of Indigenous land and support of Indigenous sovereignty, as a way to address large-scale systematic issues. Focused on issues of watershed degradation, this Thesis uses Deer Island, the main water treatment facility that serves much of the city and state, as a case study. In 1675 during King Philip’s War, around 500 people, primarily members…