Along the pathway between the Visitors Center and Franklin Delano Roosevelt's cottage on Campobello Island, New Brunswick Canada.
Anecdotally, used by FDR as a summer retreat because summers in Washington DC were (and still are) miserably hot and humid. However the White House was air-conditioned before he became president.
The movie "Sunrise at Campobello" is a misnomer: FDR's cottage is on the west side of the island and it takes a while for the sun to reach it.