After watching Chris Pratt's tour of the set of the Milano (the Guardians of the Galaxy's ship) I'm really surprised at all the work that went into making it. The details and craftsmanship are amazing. The entire thing is so well made that you'd think it is a real starship.
If you haven't seen Guardians of the Galaxy, go see it. It's like watching Raiders of the Lost Ark, The Goonies, and the original Star Wars all rolled into one.