Sant'Eustachio is the 8th rione of Rome, identified by the initials R. VIII. It is named after the eponymous church and is located within the Municipio I.
Its coat of arms depicts the head of a stag with a cross between the antlers, symbol of Saint Eustace: the figure is golden on a red background.
Wikipedia https://en.wikipedia.org/wiki/Sant'Eustachio_(rione_of_Rome)
Coordinates 41°53'52.468" N 12°28'30.979" E
