The Old Wall East is one of the many Industrial Age decorations and can be build after researching Boarding Houses. When the Old Wall East is polished, its output of happiness is doubled for 12 hours.
+54.5 per tile.
Your decoration can be polished to double the happiness provided to +218 for 12 hours.
- The efficiency is calculated by the happiness it provides divided by the number of squares the building takes up in size.
- Premium Decorations.