Choptank River Light, a screw-pile lighthouse near Oxford on Maryland’s Eastern Shore, guided traffic in the Choptank River and stood out in Chesapeake history because its second structure was the bay’s only working lighthouse moved from one site to another. The first light, built in 1871 to replace a lightship, was damaged by ice in 1881 and destroyed by a heavier ice flow in 1918. In 1921, the deactivated house from Cherrystone Bar Light was brought by barge and placed on a new foundation. That second light served until 1964, and its form now survives in a replica dedicated in Cambridge in 2012.