Derby Wharf Light Station
Derby Wharf Light Station is a historic lighthouse on Derby Wharf in Salem that is within the Salem Maritime National Historic Site. The Light Station was originally built in 1871 and used an oil lamp shining through a Fresnel lens. For many years, Derby Wharf Light had one of only 17 sixth-order Fresnel lenses in the United States. Today, the light is solar powered, and the light is a red flash every six seconds.
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