The 747 is certainly iconic, but I hate to be the one to tell you that 747 production may be coming to an end as the industry has zero interest in inefficient four-engine jets.

Basically no interest in the passenger or freighter model at this stage (the newest series, the -8I/-8F, has attracted barely over 100 deliveries). Same story for the A380, whose orders basically stopped in 2014. Freight and passenger service are both moving to more efficient twin-engine wide-bodies.