(DC) (Friends of Peirce Mill) Celebrate National Park Week with an evening of music, dancing, and community at historic Peirce Mill! Join the DC Square Dance Collective as they bring the mill yard to life with live music under the twinkling lights. Whether you’re a seasoned dancer or trying square dancing for the very first time, everyone is welcome. A caller will teach each dance and guide you every step of the way—no partner, lessons, or prior experience required.