An afternoon's long walk in the Rockefeller Preserve near Sleepy Hollow, New York, offers lessons for any designer. Look up. Look out at the horizon. Look at your feet. The diversity and richness of a single glance, where afternoon fall sun warms the sheltered earth and promises evening, can be inspiring and humbling. What can our own structures do but frame the world, declaring our separation, or harmonize with it? The linear and biological dynamics of a simple pile of leaves captures change more completely than any human effort.