Great Wall of China: Not Interior/Exterior, But Northern/Southern Sections

There is no "interior" and "exterior" Great Wall. The wall is a network of walls, trenches, and natural barriers built across dynasties. Scholars classify it by geography:

Northern Great Wall (Well-Preserved, Near Beijing)

• Badaling — most visited, heavily restored, 70 km NW Beijing
• Mutianyu — less crowded, cable car, toboggan, 73 km NE
• Jinshanling — half-restored/half-wild, 130 km NE, photography favorite
• Simatai — steep, night tours, Gubei Water Town, 120 km NE
• Jiankou — wild, dangerous, iconic "arrow nock" peak
• Huanghuacheng — lakeside, partially submerged

Western & Eastern Termini

• Jiayuguan Pass (Gansu) — "First and Greatest Pass Under Heaven," western terminus of Ming Wall
• Shanhaiguan Pass (Hebei) — "First Pass Under Heaven," eastern terminus at Bohai Sea ("Old Dragon's Head")

Southern Great Wall (Lesser-Known)

In Hunan/Hubei/Guizhou — built by Ming to control Miao/Yao uprisings. Shorter, less studied, distinct from the northern frontier wall.

Total Length

Ming Wall: 8,850 km (5,500 mi). All dynasties combined: ~21,196 km (13,171 mi) per 2012 survey.

The Wall isn't a single line—it's a palimpsest of border defense across 2,000 years.