This is the 3313th most frequent Russian word.
памятника
The Russian word "памятника" means "monument" or "memorial" (genitive singular or accusative plural form).
Here, 'памятника' functions as the genitive case, showing possession or close relation to another entity.
Я посетил памятника в центре города.
I visited the monument in the city center.
'Памятника' is employed in genitive case to express origin or source of the photograph (of the monument).
Фотография памятника висит на стене.
The photograph of the monument is hanging on the wall.
The word 'памятника' here functions in the genitive case indicating the object of care or responsibility.