How accurately is the Great Pyramid aligned?
The Great Pyramid's sides are aligned almost exactly with true north, south, east, and west, a stunning feat of precision for ancient engineers.
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- Is the Golden Gate Bridge always being painted?
“Painters work on the Golden Gate Bridge year-round, touching up areas worn by salt air and weather.”
Reference: Golden Gate Bridge, Highway and Transportation District
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When did the Golden Gate Bridge open?
The Golden Gate Bridge opened in 1937 and had the longest main span of any suspension bridge in the world until 1964.
How long does it take to clean the Burj Khalifa's windows?
Cleaning all the windows on the Burj Khalifa takes about three to four months.