Chesapeake Bay Lighouses, USA

Wonderful images of the Chesapeake Lighthouses sent by Cindy Fields for the WiP Resolutions Swap.
With more than 4000 miles of shoreline the Chesapeake is America's largest inland estuary. A century ago, this was by far the nation's best lit waterways. The earlier lightouses were conical stone structures, but the vicious shoals of the bay required screw-pile construction which engineers developed by the 1850's.
The Chesapeake Bay is locared in the states Maryland and Virginia.