1Secret Soviet Spacecraft
Satellites capture a bizarre industrial complex in desert of Kazakhstan.
2Range of Nazi Evil
Satellites capture dozens of parallel lines hidden in Polish woodlands.
3Doomsday Lair of Greece
Satellites capture bizarre structures on the Greek island of Kefalonia.
4Mystery of the Welsh Mine
Satellites capture ruins amid bizarre structures on a Welsh mountaintop.
5Riddle of Sardinia Tower
Satellite images capture a triangular castle-like tower located on the Mediterranean island of Sardinia; experts investigate the relics of a declining ancient civilization that may have suffered a celestial catastrophe.
6Circles of the High Kings
Satellite images capture two conjoined circular structures embedded in the lush and rolling landscape of Ireland; experts investigate and uncover an ancient site linked to legendary figures and the elusive hunt for the Ark of the Covenant.
7Russia's Lightning Lab
Drone images capture oddly shaped towers in a forest clearing near Moscow.
8Poland's Secret Nazi Compound
Satellites capture a series of zigzagging patterns in Polish woodlands.
9Holes of Dead Sea Destruction
Drone images capture enormous holes scattered along the Dead Sea coastline.
10Ancient Rome's El Dorado
Satellites capture bizarre markings etched deep in the mountains of Spain.