This is a 200:1 scale model of the Saturn V rocket that was designed by KMOBrain and originally posted on Thingiverse (and Printables). It's a fantastic design that fits together very nicely and looks amazing when done. Some glue will be needed to stick the parts together permanently.
NOTE: KMOBrain is now active on Makerworld and has given me permission to post my profiles temporarily while they slowly add their files to this site. As soon as they post this model, I'll be deleting my own and adding my custom profile to theirs.