| Costello, Ali - |
| Aït Benhaddou: Morocco’s Hidden Caravan Route Fortress (23) | | Multiple Choice | 2011.10.08 |
| Apostle Islands Ice Caves: Wisconsin’s Frozen Wonder (8) | | Multiple Choice | 2011.05.17 |
| Bhimbetka Rock Shelters: India’s Prehistoric Hideaway (9) | | Multiple Choice | 2011.04.11 |
| Bungle Bungle Range: Australia’s Forgotten Beehive Formations (17) | | Multiple Choice | 2011.05.16 |
| Chiricahua National Monument: Arizona’s Wonderland of Rocks (15) | | Multiple Choice | 2011.12.21 |
| Cumberland Island: Georgia’s Secluded Beach Escape (18) | | Multiple Choice | 2011.01.02 |
| Dry Tortugas National Park: Florida’s Remote Island Paradise (23) | | Multiple Choice | 2011.11.27 |
| Erta Ale: Ethiopia’s Remote Lava Lake (26) | | Multiple Choice | 2011.05.03 |
| Farafra Oasis: Egypt’s Hidden Desert Retreat (8) | | Multiple Choice | 2011.09.02 |
| Giants Causeway: Ireland’s Natural Puzzle (8) | | Multiple Choice | 2011.03.23 |
| Great Basin National Park: Nevada’s Secret Wilderness (9) | | Multiple Choice | 2011.07.10 |
| Greenland’s Hidden Ice Caves (8) | | Multiple Choice | 2011.11.25 |
| Gunkanjima: Japan’s Abandoned Battleship Island (17) | | Multiple Choice | 2011.12.11 |
| Gur-e-Amir: Uzbekistan’s Lesser-Known Mausoleum (8) | | Multiple Choice | 2011.11.26 |
| Havasu Falls: Arizona’s Hidden Waterfall Haven (9) | | Multiple Choice | 2011.05.16 |
| Hpa-An: Myanmar’s Offbeat Limestone Wonderland (8) | | Multiple Choice | 2011.07.21 |
| Huacachina: Peru’s Desert Oasis (18) | | Multiple Choice | 2011.09.16 |
| Huascarán National Park: A Hidden Peruvian Gem (9) | | Multiple Choice | 2011.05.20 |
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