feast (one's) eyes
To gaze upon something with joy or pleasure. Feast your eyes! Dinner has been served! I got my report card today—feast your eyes on all those A's!
feast one's eyes (on or upon someone or something)
Fig. to enjoy the sight of someone or something. (Upon is formal and less commonly used than on.) Just feast your eyes on that beautiful beach. Jane feasted her eyes on Roger for a while and then went on with her studying.