Guardialfiera is a comune in the Province of Campobasso in the Italian region Molise, located about 30 kilometres northeast of Campobasso. It sits on a hilltop overlooking Lake Guardialfiera, which was created as a result of the damming of the Biferno river.
Guardialfiera borders the following municipalities: Acquaviva Collecroce, Casacalenda, Castelmauro, Civitacampomarano, Larino, Lupara, Palata.
Wikipedia https://en.wikipedia.org/wiki/Guardialfiera
Coordinates 41°48'15.242" N 14°47'34.548" E