the Enterprise was an amazing achievement.
but the guy kinda cheated in that he didn't build it within the game. he took the blueprints, did it in GIMP (the free equivalent to Photoshop), and then put the layers into the level editor.
"He used the plans created by Ed Whitefire, who was commissioned to create the original plans before being replaced by Mike Okuda. Whitefire's plans are available online, and Walker used those as a reference.
"I originally took all the decks from the Whitefire plans and layered them in Gimp. I then re-sized the plans to a 1 pixel = 1 meter scale." He then reduced each deck to a two-color bitmap exported as a layer, which he considers the most tedious part of the project. "After that, the level editor for Minecraft sucked up each layer and spit out what you saw. When I wandered around on the ship for the first time, I was so pleased it worked out so well."
still a long tedious effort but not the monumental effort it would've taken if he did it in the game.