OSM tag operator=Georgetown University matches Georgetown University Astronomical Observatory in these Wikidata fields:
Astronomical observatories in Washington, D.C. | amenity=astronomical_observatory, amenity=university, landuse=observatory, man_made=telescope |
Georgetown University buildings | building=university, site=university, amenity=university, type=site |
University and college buildings on the National Register of Historic Places in Washington, D.C. | building=university, site=university, historic, boundary=protected_area, amenity=university, type=site |