It baffles the worlds top engineers nowadays let alone thousands of years ago. Moving large stones is easy - not. Precisely fitting huge blocks, all over the earth...not easy and we have no idea how. How is Baalbek even possible? I agree that 'someone' built these structures - but it certainly ain't the folks who people proclaim here in my view. Watch a few hundred hours of the alternative explanations and it just may change their views - break the conditioning.
Chris Dunn - professional who understands the reality...ain't bronze chisels doing this work. no way. As Tbird mentions...circular saws 13' +- in diameter, South America, Baalbek + hundreds of others. There is a ton of evidence, with GT being only 1 to consider, which identifies that something else occurred way back in time. Giants a reality...some continue to scoff but no matter - plenty of info out there which can weighed.
Just that little problem of 'how' - longstanding problem for which a reasonable/probable explanation has not been provided.