The land we occupy is not limited to what we see on the surface. Land, like time, accumulates in rich layers that blanket the past. Unearthing space and artifacts buried beneath these layers enables us to honour the past, understand the present and prepare for the future. The thesis explores the Seattle Underground, a network of space beneath the city's historic Pioneer Square District. It proposes the unearthing and revitalization of a portion of this network to accommodate a museum and complementary facilities dedicated to Seattle, Washington's rich history. Leveraging the unexploited qualities of the Underground, the proposal will create an important social and economic nexus for the stagnant neighbourhood. Through using design as a form of research, the thesis aims to inspire the city of Seattle to leverage this untapped, buried asset.