| Building | Length (metres) | Country | % Correct |
|---|---|---|---|
| LIGO-Livingston | 4,000 | United States | 100%
|
| Great Wall of China | 8,851,800 | China | 92%
|
| Kumbhalgarh | 36,000 | India | 79%
|
| Fenestrelle Fort | 2987.04 | Italy | 79%
|
| The Colossus of Prora | 4,500 | Germany | 75%
|
| Government Complex, Sejong | 3,500 | South Korea | 58%
|
| Diyarbakir Wall | 6,000 | Turkey | 54%
|
| Great Wall of Gorgan | 195,000 | Iran | 46%
|
| Ranikot Fort | 26,000 | Pakistan | 38%
|
| Walls of Ston | 5,500 | Croatia | 4%
|