Depends on the size of the team building it ! Anywhere from a few hours to a week.
25 years they want to build the Washington monument
It toke 8 years to build the Erie Canal.
It took 8 years to build the White House.
15 years in total
to many years to count
14
14 years
10 years
10 years
It took between 14 and 20 years to build
It tooks to build around 21 years
round about 5 or 6 years depending on the breed