Asti’s towers and cathedral preserve the wealth and conflict of a medieval commune later absorbed into larger states. The Palio is a living event whose current arrangements cannot be assumed from historical description.
Canelli’s underground cellars and the Monferrato infernot are different architectural systems: commercial-scale wine tunnels are not interchangeable with small family chambers dug into pietra da cantoni.
Casale and Alessandria shift the route from hill production to strategic government and defence. Their Jewish, military and industrial histories prevent a wine-only account of the territory.
Divide the circuit into Asti, southern wine hills and eastern Monferrato days; underground visits require reservations and the Alessandria citadel depends on current event and safety access.