The scene of the sunset was beautiful.
I can't forget the sight of the accident.
I witnessed the tragic scenes of war.
Many people witnessed the scene of the accident.
A beautiful scene stretched out before us on top of the mountain.
A bizarre scene spread out there.
I still can't forget the scene from that day.
光景 emphasizes the visual impression of a sight, while 一幕 emphasizes the narrative or dramatic quality of an episode.
光景 refers to a sight or scene, often something striking or dramatic witnessed at a moment, while 眺め is specifically a scenic view enjoyed from a spot.