From a list of "
Longest Construction Projects"...here's what could very well be the
longest construction project in history,
that we know of, with some reasonable assumptions, and with some valid disagreeements possible:
Started over 2,000 years ago, and still being constructed during the 16th century A.D.,
the Great Wall was actually a series of walls constructed by different dynasties over
the centuries. Stretching over 4,160 miles at its peak, the wall was guarded by over one
million men, protecting the northern border of China against fearsome nomadic raiders.
It is estimated that between two and three million men died during its construction.
The Great Wall was as much a symbol of imperial power as it was an effective military
tool, and is unrivaled to this day as the world’s longest construction project.
Started: Circa 400 B.C.
Completed: Circa A.D. 1600
Duration: 2,000 years