Presidio Exchange Proposal

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PX Landscape: Phase I The PX site design anticipates future landscape improvements surrounding the site, so that all subsequent changes will be fully integrated with the mid-Crissy area. The PX becomes the pedestrian crossroads and hub of circulation between Crissy Field and the Main Post—connecting the airfield, promenade, and East Beach with the new tunnel tops and Learning Landscape. The PX building complex provides wind-sheltered outdoor spaces and opens up expansive views to the landscape beyond. The X-shaped design of the PX allows for two major pedestrian linkages to the new tunnel top parklands: the first connecting to the Main Post, and the second connecting the National Cemetery to the shoreline bluffs. • The Bridgeway The Bridgeway is a dramatic promenade connecting the Main Post to the second floor rooftop open spaces of the Presidio Exchange. In addition to affording expansive views of Crissy Field, the Bay, and the Golden Gate Bridge, this promenade presents opportunities to introduce programs, art, and interpretive elements. Site-specific active play areas take advantage of the unique location, views, and sloped landscape. The Bridgeway continues onto the roof of the PX, which features wind-protected plazas and outdoor terrace space for the second floor Restaurant. • Crissy Commons Crissy Commons is a wind-protected, paved open space that can be flexibly configured for spontaneous or formal events. It can be tented and provides spill-out space from the Café and workSHOP. This includes movable fire pits for warm gatherings in the evenings. On the south side, a 650-seat Amphitheater is used for spontaneous and formal events in the wind-protected

shadow of the PX. Terraced seating looks out to Alcatraz and beyond. On the eastern edge of the Commons is the Picnic Pavilion, an open-sided, roofed structure that can accommodate outdoor cooking for large or small groups. The Commons also serves as a “meet-up” spot, defined by an art installation at the center of the space, set before the backdrop of the Amphitheater. • East Lawn Beyond the Commons lies the East Lawn. An intimate grassy open space that can be tented, it offers additional spill-out space for the Picnic Pavilion, Café, and workSHOP. The East Lawn provides the transitional open space from the PX to the Learning Landscape and Crissy Field Center beyond. • West Meadow A blend of community green and cultural commons, the West Meadow is an open grassy meadow area, free of structures, which can be flexibly programmed for outdoor events or art exhibits for creative and social exchange. It is designed with two goals in mind—preserving and respecting the shellmound and other sensitive cultural resources located here, while extending the open space and views of the Crissy Airfield up to the west façade of the PX. Picnicking, art events, and tents can be accommodated in this area. A mound and rain-garden at the south side frame the open space and provide a buffer from the adjacent parking lot. Adjacent to the West Meadow, the south sidewalk of Mason Street continues in a direct line east at the end of the Airfield as a sloped walk on top of an earthwork to the PX roof plaza. From the plaza, pedestrians can connect to the Bridgeway that extends across the Main Post tunnel top.

The PX will be a pedestrian circulation hub connecting Crissy Field to the Main Post

PX Landscape: Phase II • Bluff Connection A second rooftop connection will be created from the roof plaza along a reconstructed bluff to provide ADA-compliant access to the Battery Blaney/Cemetery tunnel top, thus fully integrating with the PX and Crissy Field. • Greenhouse and Garden As part of the programming for the Café, Demonstration Kitchen, and Picnic Pavilion, production of food for on-site consumption is an important goal of the PX project, highlighting the benefits of locally produced ingredients. Site-grown products can be used for food-related programming and food service. The Greenhouse and Garden is slated for Phase II in order to give the various programs and facilities enough time to determine the optimal size of these spaces and the required mix of food products, in consultation with the Presidio Native Plant Nursery and Crissy Field Center staff. In addition, a monitoring period can be established to understand how Phase I building and landscape improvements affect area microclimates—and thus growing conditions.

• Parking The project provides 350 parking spaces in the first phase of construction. The earthwork screens the surface parking lot from Mason Street and Crissy Field.

North Elevation, including bluff and Building 106 in background (REQUIRED)

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