Pont du Gard in Vers-Pont-du-Gard

You're standing at the Pont du Gard, a Roman aqueduct bridge over the river Gardon in the south of France. Take a look at those three tiers of arches stacked on top of each other, wide at the bottom and narrow at the top. It's nearly forty-nine metres high and about two hundred and seventy-five metres long, exceptionally tall by Roman standards.