DC -- Smithsonian Institution Building (The Castle):
[1] SICAS_170418_01.JPG
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[2] SICAS_170418_05.JPG
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[3] SICAS_170418_13.JPG
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[4] SICAS_170418_17.JPG
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[5] SICAS_170418_23.JPG
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[6] SICAS_170418_29.JPG
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[7] SICAS_170418_34.JPG
  Medium (Email) (Bigger?)