Portal:National Register of Historic Places/Did you know/17

...that Madeleine L'Engle ran writers' workshops and retreats every January at Holy Cross Monastery (pictured) in West Park, New York?
...that the Smith Point Light at the mouth of the Potomac River was preceded by four other lighthouses and three lightships at the same site?
...that the Hudson River Historic District is, at 35 square miles (89 km²), the largest Registered Historic District in the contiguous United States?
...that the Solomon Courthouse has twice served as a post office, and was the setting for a courtroom scene in The Hunted?
...that the T.G. Richards and Company Store is the oldest brick building in Washington?