This is the 3186th most frequent French word.
regardé
"Regardé" means "looked at" or "watched."
In this sentence, 'regardé' is used in the past tense (passé composé) to describe an action that happened in the past — watching a movie.
J'ai regardé un film passionnant hier soir.
I watched an exciting movie last night.
Here, 'regardé' reflects the action of observing or looking at the painting and indicates focus and careful attention.
Ma sœur a regardé attentivement le tableau au musée.
My sister carefully looked at the painting in the museum.
In this instance, 'regardé' is used to signify consulting or examining an item, in this case, a map, to achieve a purpose.