Season
Season 7 Episode
- Season 4 Mysterious Ancient Ruins
- Season 4 The Mystery of Genius
- Season 4 What Lies Below?
- Season 4 Secrets of Abandoned Places
- Season 4 Acts of God
- Season 4 Serial Killer Creatures
- Season 4 Mysterious Tombs
- Season 4 Uncanny Curses
- Season 4 Superhuman Feats
- Season 4 Mysteries of the Missing Link
- Season 4 Surviving the Impossible
- Season 4 The Search For King Arthur
- Season 4 Wonders of the Ancient World
- Season 4 The Hunt For Jack The Ripper
- Season 4 The Search for Extraterrestrial Life
- Season 4 Real Life Monsters
- Season 4 America's Lost Treasures
- Season 4 The Bermuda Triangle and the Beyond
- Season 4 Secrets of the Founding Fathers
- Season 4 The Weird Wild West
- Season 4 Devastating Disasters
- Season 4 Mysterious Monoliths
The UnXplained - Season 4 Episode 13 Wonders of the Ancient World
6.70 43 minutes Remarkable feats of engineering from our ancient past span the globe. Some are amazing in size. Others in sophistication. Some are so strange they border on inexplicable. Did the ancients have advanced scientific knowledge that has been lost to time? How--and why--did they fashion these incredible wonders?
