Filopappou is the hill Athens climbs to look back at itself. Across a shallow valley from the Acropolis, green where the rock is bare, it holds the place where democracy was invented and the single best view of the Parthenon there is. Walk it toward evening; the marble opposite turns gold and the path empties of everyone but the dog-walkers.
Start on Dimitris Pikionis's hand-laid stone path — paving as art, a 1950s masterpiece you simply walk on — past the little church of Agios Dimitrios Loumbardiaris and the rock-cut chambers misnamed the 'prison of Socrates'. Then the Pnyx: the bare terrace where the citizens' assembly met, the speaker's platform still cut into the stone. Stand where the speeches were made and look across.
Climb on to the Philopappos Monument at the summit, the Parthenon framed dead ahead, the sea behind it. Come at sunset. Then drop down the north path to Thiseio, the Acropolis at your shoulder, the Metro 1 line and a terrace drink waiting at the bottom.