Join ASLA-Northern California Chapter for a walking tour of San Francisco’s newest park – the Presidio Tunnel Tops – before it opens to the public. The $120 million project is the final step in the two decades long transformation of the Presidio’s northern waterfront. Walk with landscape architects from the Presidio Trust and James Corner Field Operations to learn what it took to transform bare tunnels over a freeway into 14-acres of new urban national park designed to welcome all. Registration is limited.