One of the unique things to do in Fallout 4 is to make a home base. Not unlike other aspects of Bethesda games, the way you make your base is entirely up to you. As long as you have the materials, you can make whatever you please. One gamer, a Youtuber named Ops_Specialist too this concept quite literally, and used the materials he had to make an AT-AT base. For those who aren’t aware, the AT-AT’s are the iconic armored land vehicle of the Empire in the original Star Wars trilogy.
The video below shows off the base, which is indeed a base, as it has an inside, and living quarters.