From Dan Zak's Washington Post article:
Two stories high and as long as a city block, it sprawls over a crumbly retaining wall behind a brown shopping plaza in Northeast Washington, near a black chain-link fence tangled with barbed wire, surrounded by an ash-colored asphalt parking lot. Red Line commuters from Maryland will see it as a vibrant streak across a familiar (if routinely ignored) green-gray landscape by the Rhode Island Avenue Metro stop. Those on foot, who live in or pass through the Edgewood neighborhood, will see it up close: whirling figures, rich hues sprayed up and down its 20-foot height, a roiling progression of five artistic visions sharing one 275-foot-long wall.
As usual with these city hides, coords are approximate; once you see the mural you may need to rely on your geosense more than your GPS. Hint is pretty much a dead-giveaway, so resist until you can't. Please remember to use stealth, replace just as found, and don't forget your writing utensil -- enjoy!
-- Congrats to wet fit for his 474th FTF! --