I always wanted to fly on a 747. They seem to be somewhat uncommon these days, I don't travel by air a lot, probably around 20 flights total in my life and the farthest I flew was probably either Tx to San Francisco or Tx to Mn, not sure but I think San Fran is farther.
Anyways I looked it up, Lufthansa flies from IAH (Houston) to Frankfurt Germany via a 747. Never been to Europe. Now that my kids are mostly grown I've been kicking around the idea of maybe going via 747. Looks like a 9 hr flight.