Located on the Delaware Riverfront just north of center city Philadelphia, Penn Treaty Park occupies both a venerable spot in history as well as a coveted and unique location right at the water’s edge. Originally the site where William Penn and the Lenni Lenape agreed on peace in 1682, Penn Treaty Park has since been enjoyed as one of the few public waterfront parks on the central Delaware. The City of Philadelphia has great aspirations for the 7-mile central Delaware waterfront. Penn Treaty Park was selected as the early-action project to develop a robust public participation model, and establish a design precedent for future waterfront projects. Studio Bryan Hanes was commissioned by Fairmount Park and the Friends of Penn Treaty Park to develop a master plan and design that will transform this underutilized, but sacred historic location that is currently underutilized into a regional destination on the river. Studio|Bryan Hanes developed a community engagement model that has been adopted by the City of Philadelphia and Delaware River Waterfront Corporation for all future projects. Through dialogue and collaboration with the community, a master plan was developed that responded to the community’s input and created a platform for an open, habitable and sustainable waterfront. The design for the park is based on the community’s stated goals and engages the historic tale of the treaty to celebrate the Quaker traditions in a contemporary urban context. The programmed spaces of the park revolve at the edges of the property around the central open space. It is the edges of the site that define the park. The north edge contends with the city and adjacent neighborhoods, and functions as an urban “porch” or threshold that both announces the park and welcome people into its fold. The park is meant as a tribute to both the Native American concept of interconnectedness, and the Quaker mandate of responsible stewardship of the earth. Each aspect of the design, from its broad gestures to its plants and furnishings are suggested with this goal in mind. As it arcs from the neighborhood to the water, and then circles back, the park strives to balance the demands of a diverse citizenry, while at the same time allowing for a new ecology to unfold from the shoreline to the city’s infrastructure and neighborhoods. Conceived of alternately as a lung or heart of the city, its exchange of flow between the river and the city makes it the perfect place for experimentation and education. New technologies that promote a healthier future will be employed to maximize its potential as a precedent for a greener city. As the birthplace of a peaceful and tolerant new colony, Penn Treaty Park is the perfectly positioned to take on this role.