Today it's an open green oval where almost nothing physically survives — you have to imagine the chariots and the roaring crowds. But that emptiness is the point: it's free, never crowded, and the one big central space where Romans actually jog, walk dogs, and picnic on the grass with the Palatine ruins rising behind. Treat it as a local-rhythm pause rather than a monument, and an AR app can fill in the spectacle for the curious.