Dumbarton Oaks is a privately-owned park in Georgetown. It is famous for its formal gardens.
Though it's still early for most of its plants to be blooming, Girlfriend and I went on Sunday for the cherry blossoms (it's one of the spots that locals go to avoid the Tidal Basin crowds).
Just so there are no questions about whether these are "city photos", here is a nice view from one of the park lawns. The spire on the right is actually a mosque minaret.
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