The Colle dell'Infinito — the Hill of the Infinite — is a small rise behind the Casa Leopardi where the young Giacomo Leopardi walked and composed his most famous poem, L'Infinito, around 1819. The view from the top has hardly changed: rolling country falling away toward the Adriatic, the silhouette of the Conero peninsula in the distance, the sea beyond. A modest park has been created on the hilltop, with the poem inscribed on a marble stone and benches set out under olive trees.
It is a short walk up from the Casa Leopardi — five minutes at most — and is normally combined with a visit to the house itself. Come at sunset if you can; the light comes in low over the hills and the place lives up to its name.