What on Earth?

1

Secret Soviet Spacecraft

2022-06-22

2

Range of Nazi Evil

2022-06-29

3

Doomsday Lair of Greece

2022-07-06

4

Mystery of the Welsh Mine

2022-07-13

5

Riddle of Sardinia Tower

2022-07-20

6

Circles of the High Kings

2022-07-27

7

Russia's Lightning Lab

2022-08-03

8

Poland's Secret Nazi Compound

2022-08-10

9

Holes of Dead Sea Destruction

2022-08-17

10

Ancient Rome's El Dorado

2022-08-24