8.02 avg 6 episodes 8.2 → 7.0 44 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Secrets of the Acropolis | 8.2 | 12 |
| 2 | Secrets of the Maya Pyramid | 8.0 | 7 |
| 3 | Medieval Cathedral Mysteries | 8.2 | 8 |
| 4 | Secrets of Westminster Palace | 7.8 | 8 |
| 5 | Secrets of the Pyramids | 8.9 | 8 |
| 6 | Great Wall of China | 7.0 | 8 |
7.93 avg 12 episodes 8.5 → 8.3 44 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Tut's Buried Secrets | 8.5 | 12 |
| 2 | Secret History of the Sphinx | 8.5 | 11 |
| 3 | Curse of the Blood Pyramids | 8.0 | 10 |
| 4 | Mystery of Egypt's Mega Temple | 7.7 | 10 |
| 5 | Lost Temples of the Jungle | 8.4 | 11 |
| 6 | Hunt for King Arthur's Castle | 7.8 | 10 |
| 7 | Ghosts of Stonehenge | 7.5 | 14 |
| 8 | Sex, Lies, and the Taj Mahal | 7.3 | 10 |
| 9 | Hidden City of the Incas | 7.4 | 13 |
| 10 | Treasures of the Terracotta Army | 8.0 | 11 |
| 11 | Lost World of the Colosseum | 7.8 | 14 |
| 12 | Lost City of the Desert | 8.3 | 9 |
7.61 avg 17 episodes 7.6 → 7.6 44 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Inca Apocalypse: The Dark Evidence | 7.6 | 9 |
| 2 | Viking City of the Dead | 7.5 | 6 |
| 3 | Lost Pyramids of the Americas | 7.4 | 8 |
| 4 | Statue of Liberty: The New Secrets | 7.3 | 6 |
| 5 | Hunt for the Real Atlantis | 7.5 | 8 |
| 6 | Wrath of Attila the Hun | 7.5 | 8 |
| 7 | Lost World of Easter Island | 8.1 | 8 |
| 8 | Pompeii's Doomsday Mummies | 8.0 | 8 |
| 9 | Mystery of the Cursed Pyramid | 7.4 | 11 |
| 10 | Titanic: The Last Secrets | 8.0 | 9 |
| 11 | Secrets of the Forbidden City | 7.4 | 9 |
| 12 | Forbidden City of the Pharaohs | 8.1 | 9 |
| 13 | Egypt's Lost Skyscrapers | 7.4 | 9 |
| 14 | Ghosts of the Stone Age | 7.5 | 11 |
| 15 | Lost City of the Maya | 7.1 | 12 |
| 16 | Curse of the Jungle Treasure | 8.0 | 10 |
| 17 | Ramses' Buried Treasures | 7.6 | 9 |
7.88 avg 27 episodes 7.5 → 7.1 44 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Mysteries in the Alien Desert | 7.5 | 14 |
| 2 | Alcatraz's Hidden Secrets | 7.5 | 8 |
| 3 | Mysteries of the Ice Mummy | 7.6 | 10 |
| 4 | Nero's Lost Palace | 6.9 | 12 |
| 5 | Curse of the Seventh Wonder | 7.4 | 12 |
| 6 | Dead Sea Scrolls: The Dark Truth | 7.0 | 12 |
| 7 | Pompeii's Evil Twin | 7.7 | 13 |
| 8 | Finding Sparta's 300 | 7.9 | 11 |
| 9 | Empire State Building: The New Secrets | 7.1 | 10 |
| 10 | Egypt's Buried City | 7.8 | 9 |
| 11 | Vesuvius's Secret Victim | 7.9 | 8 |
| 12 | Rome's Great Wall | 8.2 | 10 |
| 13 | Hitler's Lost Bunker | 7.2 | 10 |
| 14 | Leaning Tower of Pisa: The New Mystery | 8.0 | 11 |
| 15 | Ghosts of the Wild West | 8.3 | 7 |
| 16 | Tower of Babel: The New Evidence | 8.0 | 8 |
| 17 | Lost City of Troy | 7.8 | 10 |
| 18 | Mount Rushmore: The Hidden Secrets | 8.2 | 7 |
| 19 | Curse of the Hindenburg | 8.1 | 9 |
| 20 | Bermuda Triangle Apocalypse | 8.9 | 7 |
| 21 | Lost Kingdom of Kush | 8.9 | 7 |
| 22 | Hunt for the First Pyramid | 8.2 | 6 |
| 23 | Lost City Of Babylon | 8.7 | 6 |
| 25 | Secrets of the Black Pyramid | 8.3 | 7 |
| 26 | Egypt's Sunken Treasures | 8.7 | 6 |
| 27 | Lost World of Atlantis | 7.9 | 7 |
| 28 | Jericho's Buried Secrets | 7.1 | 8 |
7.84 avg 11 episodes 7.9 → 7.4 44 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Mystery of the Volcano Temple | 7.9 | 8 |
| 2 | Rome's Gate to Hell | 8.6 | 8 |
| 3 | Legend of King Midas | 8.0 | 11 |
| 4 | Ghosts of Venice | 7.6 | 11 |
| 6 | Terror In The Torture Tower | 7.9 | 9 |
| 7 | Secrets Of The Sunken Empire | 8.2 | 8 |
| 8 | Sumerian Pyramid of Death | 8.6 | 9 |
| 9 | Egypt's Floating Pyramid | 6.8 | 10 |
| 10 | Curse of Relic Mountain | 7.6 | 7 |
| 11 | Lost City of Persia | 7.6 | 8 |
| 12 | Valley of Egypt's Queens | 7.4 | 7 |