Photo credit: Andy Serrano

There are some feats of ancient engineering that still can’t be replicated today, like the Great Pyramids of Giza. Sure, we’ve figured out several possible techniques that the ancient Egyptians could have used, but how did the Giza Pyramids attain alignment with true North with an accuracy within 1/10 of a degree, without being able to view the construction site from above? Continue reading to see more mind-blowing feats of ancient engineering – bonus videos included.

Infographic

Bonus Videos

[Sources 1 | 2]