Human beings are capable of building incredible structures, from the latest cutting-edge office blocks to artistic sculptures. Cathedrals, sporting arenas, and monuments all over the world are a testament to our creative skill as a species. In the modern era though, we have technology to help us, from huge mechanical drills to laser cutting curved glass. Builders didn’t have these luxuries in ancient times, so how did they manage to create some of the ancient wonders we’re about to show you in this video? Science still doesn’t have the answers.