From a thesis project to the largest yacht in the world: that's the story of the Project Valkyrie Superyacht. Designed by Chulhun Park with support from Palmer Johnson, the vessel measures 229 meters, with accommodations for 52 guests and 92 crew members. Meant to be more than just a billionaire's plaything, it also offers public spaces in the form of a casino, theater, mall, restaurants, and exhibition halls. The craft is based upon Palmer Johnson's copyrighted trimaran hull but eschews traditional "wedding cake" construction for a more streamlined, almost canoe-like form. Capable of hitting speeds up to 25 knots, the boat is still just a plan for now, with an estimated build cost of $800 Million.