What is this Northern Virginia landmark?

Decipher this puzzled pic, and you may appear in the next issue of Northern Virginia Magazine.

Decipher the puzzled pic below. The first reader to email us the correct answer will earn the satisfaction of having their name in print (and bragging rights). Go ahead, give it a shot. Email Editorial@NorthernVirginiaMag.com, subject line: Snapshot.

December-2017-snapshot1

Click to enlarge

(December 2017)

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