GREAT DISCOVERIES · 1884
Royal Observatory, Greenwich, England
The observatory was founded in 1675 to improve navigation at sea. Longitude 0° runs through its courtyard.
The story, as a puzzle
Where longitude begins.
In 1884, delegates from 25 nations meeting in Washington chose a line through this observatory as the world's prime meridian. Pin it.
Where it is
Think you'd have found it on the map?
Five true stories a day, the same for everyone.
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Five true stories a day, the same for everyone.
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