Culmination

Noun

 * 1)  The attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit.
 * 2) Attainment or arrival at the highest pitch of glory, power, etc.

Thesaurus
accomplishment, acme, acme of perfection, apex, apodosis, apogee, bitter end, brow, cap, catastrophe, ceasing, cessation, climax, close, closure, cloud nine, coda, completing, completion, conclusion, consummation, crack of doom, crest, crown, culmen, curtain, curtains, death, decease, denouement, destination, destiny, doom, edge, effect, end, end point, end result, ending, envoi, epilogue, eschatology, expiration, extreme limit, extremity, fate, final result, final solution, final twitch, final words, finale, finality, finis, finish, finishing, fulfillment, full development, goal, heaven, heavens, height, high noon, highest pitch, highest point, izzard, last, last act, last breath, last gasp, last things, last trumpet, last word, last words, latter end, limit, maturation, maturity, maximum, meridian, mountaintop, ne plus ultra, no place higher, noon, omega, payoff, peak, perfection, period, peroration, pink, pink of perfection, pinnacle, pitch, point, pole, quietus, realization, resolution, resting place, ridge, ripeness, rounding off, rounding out, seventh heaven, sky, spire, stoppage, stopping place, summit, swan song, term, terminal, termination, terminus, tip, tip-top, top, topping off, topping-off, ultimate, upmost, upper extremity, uppermost, utmost, vertex, very top, windup, zenith