7.45 avg 10 episodes 7.0 → 8.2 42 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 2 | Battle Machines | 7.0 | 9 |
| 3 | World's Tallest Skyscraper | 7.1 | 11 |
| 4 | Super Fast Warship | 7.6 | 14 |
| 5 | Boot Camp | 7.8 | 9 |
| 6 | Fault Zone Tunnel | 7.6 | 7 |
| 7 | Hurricane-Proof Homes | 7.3 | 9 |
| 8 | Floating City | 7.0 | 8 |
| 9 | Biggest Casino | 6.5 | 8 |
| 13 | Deepest Tunnel | 8.4 | 7 |
| 14 | Major League Stadium | 8.2 | 8 |
7.63 avg 4 episodes 7.6 → 7.5 44 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Dallas Cowboys Stadium | 7.6 | 8 |
| 3 | Hong Kong Bridge | 7.6 | 6 |
| 5 | Widening the Panama Canal | 7.8 | 7 |
| 8 | NASA | 7.5 | 7 |
7.68 avg 5 episodes 7.8 → 7.4 47 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Singapore Sky Park | 7.8 | 7 |
| 2 | Kuwait Tower | 7.7 | 7 |
| 3 | Building a Better New Orleans | 7.4 | 6 |
| 5 | South Africa's Mponeng Gold Mine | 8.1 | 9 |
| 7 | Melbourne Stadium | 7.4 | 6 |
7.63 avg 7 episodes 7.9 → 8.4 49 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Rebuilding New York's Subway | 7.9 | 10 |
| 2 | Drought-Proofing Australia | 7.2 | 6 |
| 3 | Azerbaijan's Amazing Transformation | 7.2 | 17 |
| 5 | Constructing Serbia's Longest Bridge | 9.4 | 15 |
| 6 | Amsterdam's Futuristic Floating City | 6.6 | 8 |
| 7 | Building Mumbai's Modern Airport | 6.7 | 8 |
| 8 | Turkey's Mammoth Hydropowered Dam | 8.4 | 10 |
