noun, noun or participle which takes 'suru', transitive verb
lighting up; illumination; floodlighting
Refers to the decorative or dramatic lighting of buildings, landmarks, or outdoor spaces, often at night. Can be used as a noun or as a suru-verb.
from English light up
夜になると、城がライトアップされる。
At night, the castle is lit up.
公園の桜をライトアップするイベント
The event where they light up the cherry blossoms in the park is popular.