Washington D.C

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Across
  1. 4. National *blank*
  2. 5. *blank* Monument
  3. 7. Marine *blank* War Memorial
  4. 8. *Blank* National Museum
Down
  1. 1. Air *blank* Memorial
  2. 2. Spy *blank*
  3. 3. *blank* of Congress
  4. 4. *blank* Cemetery
  5. 6. White *blank*
  6. 7. U.S *blank* Building