Probably quite a while because they were made by hand, im guessing a few years....
how long does it take to build a asimo
5
Four.
how long did it take to build the half moon
how long did it take to build the scottish parliment?
how long did it take to build cabot tower
4
hs2 will take 15 years to build
how long does it take to build a beam bridge of 2400 sq ft
it took 3 years
How long did it take to build st James cathedral london
a long time