feast for the eyes; visual treat
Used when seeing something beautiful or pleasant, often in a lighthearted or appreciative tone. Can refer to attractive scenery, art, or people.
Seeing the famous paintings at the museum was a feast for my eyes.
Her appearance in a kimono is truly a visual treat.
Compound of 目 (eye) + の (possessive particle) + 保養 (recuperation, recreation). Literally 'recuperation for the eyes', it figuratively means something that gives the eyes a pleasant rest or treat.