A 2012 government survey found that the Great Wall of China and its associated walls, trenches, and fortifications span a combined 21,196 km, making it by far the longest wall structure ever constructed. Sections were built over many centuries by numerous Chinese dynasties, with the earliest portions dating back to around the 7th century BC.
Record no. MRB-2026-005589
Longest Wall Ever Built
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.