Near downtown Aurora, Oregon, sits a small eight-sided building that most visitors walk right past. Children pass it on school field trips. Tourists photograph it without a second thought. Yet this modest structure may be the last surviving piece of one of the most famous landmarks in Oregon history. And after more than a century, nobody can say for certain why it was built. was it a chicken coop? A smokehouse? A band hall? Or something else entirely? As this compelling video explains, the deeper you dig into Aurora’s Octagon Building, the stranger the mystery becomes.