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      astronomical observatories at Arlington, United States

    • Old Naval Observatory
      6km
      wikipedia
      US Naval Observatory (Washington, District of Columbia)
    • Georgetown University Astronomical Observatory
      6km
      wikipedia
      Georgetown University Observatory yard
      Georgetown University Astronomical Observatory north side
      Georgetown University Observatory 2010
      Georgetown University Astronomical Observatory east side
    • United States Naval Observatory
      9km
      website
      Microthermal tower, USNO and Columbia domes on Cerro Tololo (noao-04953)
      428-GX-K-121166 (24194578810)
    • University of Maryland Observatory
      23km
      wikipedia
      Memorial Chapel at UMCP, front view off-center, August 21, 2006