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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- How much wire is in the Golden Gate Bridge cables?
“The Golden Gate Bridge's two main cables contain about 80,000 miles of wire.”
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.
Was sticky rice used to build the Great Wall?
Builders of parts of the Great Wall of China used mortar made with sticky rice.