na-adjective
Describes something that has artistic quality, is aesthetically refined, or relates to art. Used for works, expressions, sensibilities, and people.
彼女の写真はとても芸術的だ。
Her photographs are very artistic.
この映画は芸術的な価値が高い。
This film has high artistic value.
美術的 leans more toward visual/fine arts, while 芸術的 covers a broader range of artistic expression.
Compound of 芸術 (art) + 的 (-like, -ic). The suffix 的 is a productive way to form adjectival nouns from nouns.