Dreaming of peering through a periscope nudges you to elevate your thinking and observation. It's as though your subconscious is advising you to momentarily step back, detaching from your immediate surroundings to acquire a more holistic viewpoint. Such dreams resonate with the idea of not getting too engrossed in the minutiae, but rather to broaden your horizon and think beyond the confines. The periscope in your dream is a metaphorical invitation to embrace multi-dimensional thinking over a linear one.