From Today I Found Out.

In this compilation video, we’re looking at the insanely cool massive ancient underground city of Derinkuyu, how the ancient Romans manged to build perfectly straight roads, how one actually became a Spartan Warrior, and finally what the Ancient Greeks actually said about Atlantis.

0:00 The Massive Ancient Underground City of Derinkuyu & The Amazing Scorpion Filled Tunnels of Cu Chi
11:03 How Did the Ancient Romans Manage to Build Perfectly Straight, Ultra Durable Roads?
28:22 How Did One Actually Become a Spartan Warrior?
42:14 What Did the Greeks Actually Say About Atlantis