On a budget, Odeon of Herodes Atticus (daytime view) still earns its price.
Included in Acropolis / combo ticket
Even without a show, the towering arched façade and the sweep of stone seating are one of the most photogenic stops on the Acropolis south slope, included on the main ticket. The catch: outside festival nights you only view it from above the railings — you can't go down onto the seats or stage.