AI Civilizations that own the Great Wall are particularly vulerable to attack after the discovery of Metallurgy. The AI doesn't build City Walls when they have the Great Wall because they already have them. Thus, when the Great Wall becomes obsolete, a large number of cities that once had City Walls no longer have and are much easier to attack.
The Great Wall of China, a huge stone structure stretching from the Yellow Sea to the Asian deserts, was built over a period of approximately 1,800 years. The wall is 25 feet high and 12 feet thick, and runs nearly 1,500 miles across northern China. The purpose of the Great Wall was to make it difficult for raiders to escape with their booty, and thereby discourage invasion. Despite its overwhelming size, the wall was not intended to keep invaders out, since manning such a defensive structure would have been prohibitively expensive.
- The extra ability for the wonder to act as a city wall is strangely not specifically mentioned in the Civilopedia for Civilization 2 Multiplayer Gold, but is confirmed in the manual.
|Civilization 2 Wonders|
|Wonders of The Ancient World|
|Wonders of The Renaissance|
|Wonders of The Industrial Age|
|Wonders of The Modern World|