Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
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The site where the Parthenon was built had to be cleared of hundreds of dinosaur bones (then called giants' bones) before construction could begin.
13
No one knows who designed the first American Flag.
45
The first ever patent in the UK was Aaron Rathbone & Roger Burges, Map makers in 1618!
15
The World Trade Center towers used to have two zip codes, 10047-10048, one for each building.
77
Queen Elizabeth II served as a mechanic and driver in World War 2.
36
Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
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