The Boeing 747 version of the Boeing Business Jets (BBJ) is the world’s largest private jet. With only a handful of examples worldwide, it’s a rare bird. The 747-8I (Intercontinental) is already the second-largest passenger jet, with a maximum capacity of over 600 passengers, after the Airbus A380. The private-jet examples of the 747-8 are not only massive, but their interiors are also designed in the most luxurious ways.