Rock Creek Park: A Nature and History Walk (Guided Walk — Smithsonian Associates)
Peirce Mill at Rock Creek Park 2401 Tilden St NW, Washington, DC, United StatesThe walk begins near Peirce Mill, the historic and recently restored grist mill that celebrates the region’s agrarian past. Participants view the adjacent fish ladder that opened the spawning route for migrating shad and herring, dubbed the “herring highway.”