pinnacle

US /ˈpɪn.ə.kəl/
UK /ˈpɪn.ə.kəl/
1.

set on or as if on a pinnacle.

:
a rustic cross was pinnacled upon the makeshift altar
2.

form the culminating point or example of.

1.

the most successful point; the culmination.

:
he had reached the pinnacle of his career