high point (plural high points)

A climax; the best time in a given period.
Synonyms: culmination, pinnacle; see also Thesaurus:apex

Antonym: low point

This has been the high point of my life.
(climbing) The point of the highest elevation in a given area.
- 2008, Susan Joy Paul, Climbing Colorado's Mountains, Guilford, CT: Rowman & Littlefield, →ISBN, page 141:
  Blanca Peak is one of just three ultra-prominence peaks, or “ultras,” in the state and the highpoint of the Sierra Blanca Range, a massif that includes ranked 14ers Ellingwood Point, Little Bear Peak, and Mount Lindsey.

Translations

English