There are some people out there that have tons of talent when it comes to building things, some of those people take their talent and apply it to building things with LEGOs.
The original LEGO-built AT-AT designed by Peter Brookdale, also known as CaveGod. Brookdale is no stranger to building things with LEGOs, the man has built multiple Star Wars influenced items out of LEGOs, most of which are huge.
It took BrickVault 26 hours to build the giant AT-AT and 6,000 LEGO pieces. According to BrickVault, it was one of the most difficult builds they had ever done.