The FOR-SITE Foundation in partnership with the Presidio Trust is presenting Presidio Habitats, a site-based exhibition created for the Presidio of San Francisco, a 1,491-acre National Historic Landmark and national park site. Presidio Habitats is the first site-based exhibition to be organized for, and presented in, a U.S. national park.Jensen Architects' installation, Patience, consists of ten custom-fabricated bright yellow metal chairs scattered throughout a meadow. Each of the solitary chairs has a specific focus and relationship to the site through the height of its seat, orientation, placement, and proximity to the other chairs.An observer who sits in a chair experiences the phenomenon that informed its placement: an acute awareness of the topography and world under the grasses; the relationship of the sky to the light reflecting off the parade ground; and an unexpected view of the landscape. In this way, the chair and its occupant become part of the secret theater of the site, quietly borrowing the heron's techniques of still hunting and still viewing.