OSM tag operator=University of Cambridge matches Cambridge Observatory in these Wikidata fields:
Astronomical observatories in England | amenity=astronomical_observatory, amenity=university, landuse=observatory, man_made=telescope |
Buildings and structures of the University of Cambridge | building=university, site=university, amenity=university, type=site |
Faculty of Physics and Chemistry, University of Cambridge | building=university, site=university, amenity=university, type=site |