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The Royal Observatory is the home of the Greenwich Mean Time and The Prime Meridian. It was commissioned in 1675 by King Charles II. The Observatory was built to improve navigation at sea and find the so much desired longitude of places, one’s exact position east and west. While at sea and out of sight of land by astronomical means. I do not understand how they measure this but the area is fascinating. There again, is so much history and so many artifacts. I would advise if you are going to visit, to wear comfortable shoes. The observatory is situated on the top of a hill in Greenwich park.
Every place on earth is measured in terms of distance, east or west from this line. The Greenwich Meridian was chosen to be the Prime Meridian of the world in 1884.
This was my scary moment, I had no problems going up to see the telescope but the exit was two flights of spiral staircases down and I did not like it at all.
I have my eye on one of these. I thought they were beautiful.