Which building that became a National Historic Landmark in 1994 is in a district added to the National Register of Historic Places in 1975?
Ochre Point–Cliffs Historic District:  The district is home to famous mansions such as the William Watts Sherman House and The Breakers, one of the largest houses in the area built by the Vanderbilt Family. Ochre Point–Cliffs Historic District:  The district was added to the National Register of Historic Places in 1975.
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