The city is home to many dogs and their owners, but every space positions one as dominant over the other. Comparing and contrasting each species’ abilities and how they perceive space through vision, smell, hearing, size, and movement provides a framework for forming connections and breeding an interspecies public space in the form of a vertical park. The design activates an alleyway located on 106th and Broadway in NYC. It provides a connection between humans and dogs, two buildings and their residents, and Broadway to West End Avenue and Riverside Drive. Multiple existing structures—pipes, service ramps, windows, and fire escapes—occupy the alleyway void. These dictate limitations and opportunities for constructing a vertical terrain for guests to navigate while privileging access to residents of the connecting buildings.