My wife and I had driven this winding Oregon backroad countless times, but the structures never failed to catch our eye. Tall, narrow towers of pale wood perched on sturdy posts at the end of long gravel driveways, each one boasting a small glass panel facing the passing traffic like a watchful eye. At roughly fifteen feet high, they stood sentinel amid the evergreens and fields, their purpose as elusive as the morning fog rolling off the mountains. We speculated endlessly during our weekend drives—perhaps elaborate birdhouses for some rare species, or quirky rural mailboxes oversized for dramatic effect. Yet nothing quite fit. Every time we passed another, my wife’s frustration grew, her questions filling the car with playful theories that always fell short.

One crisp autumn afternoon, curiosity finally won. We pulled over near a particularly well-kept example, its lower window gleaming invitingly. As we approached on foot, a faint humming sound emanated from within, and the glass revealed not emptiness, but something far more intriguing just as…