As I was watching planes yesterday, I barely missed catching the 747 that was on its way to Japan. When I got home last night, I decided to look up the flight time so that I could catch it today.
As Boeing was building the design for the Heavy Cargo Airplane, they were approached by Juan Trippe who was the owner of Pan Am Airways. He was looking for a large airliner for his international routes. Boeing switched from a high wing design to something more similar to the current plane. This plane could carry over 300 passengers. It would have its first flight in 1969. Over the years, over 1500 of these planes (and their variants would be ordered).
The original 747's had a lounge in the distinctive bulge on the roof. Over the years, those were eliminated in the desire of airlines to put more people on them. The one pictured is a 747-400. The newest version is the 747-800 but I'm not sure who is interested in those.