Thousand Acre Marsh is the largest freshwater tidal wetland in northern Delaware. The Chesapeake and Delaware Canals border the marsh.
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Wilmington's Delaware History Center is housed in a renovated, art deco former Woolworth five-and-ten-cent store.
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Delaware shares a semi-circular border with Pennsylvania. The border was drawn at the time of the original land grants to William Penn from King Charles II and the Duke of York.