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Ventured out to Greenwich today and had a wander up to the
Royal Observatory. To my surprise, since I’m not a history/science buff, I discovered the Prime Meridian Line. Plus, they have a camera obscura. All for Free.
First image is of the sundial sculpture on the line.
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The second is of the clock that documents the official time. Although it looks like a quiet place there were dozens of folks standing on the line taking photos. Okay, I'm still a tourist.