Wikipedia
Grenzgipfel
The Grenzgipfel (4,618 m) ( German for Border Summit) is a peak of Monte Rosa Massif ( Pennine Alps), located on the border between Italy and Switzerland.
The Grenzgipfel is the highest summit on the Italian side of the Monte Rosa massif and the highest point of the entire border between Italy and Switzerland; it is also the culminating point of the Italian region of Piedmont and of the river Ticino drainage basin.
The closest locality is Macugnaga, which is located east of Monte Rosa Massif.