The Asti Randomizer
I tend to default to geographical landmarks when I'm in unfamiliar territory. I can often do quite well just knowing where the mountains are and where the water is. Uphill vs. downhill is often all you need to know. Unless you're on the outskirts of Asti.
This monster intersection ensures that any knowledge about the lay of the land becomes irrelevant. We usually encountered at least 3 forks and a toll gate before finding out we were going the wrong direction.