The next day you could go to Technik Museum Sinnsheim, which is about half an hour from Speyer, and has both a Concorde and a Tupolev Tu-144 (both of which you can go inside).
All truly marvels of engineering.
I recently visited Stuttgart to go to the Mercedes Benz Museum. They too have a lot of technical stuff of course, and history. Really recommend it!
The thing you neglect to mention is that the Speyer 747 is suspended 30 meters above the ground. It's breathtaking.
https://simpleflying.com/technik-museum-speyer-lufthansa-boe...
Fair. We had been to Sinnsheim a couple of times before Speyer. In Sinnsheim, they have the Concorde/Tu-144 on poles on top of one of the buildings. So, the 30 meters high suspension of the 747 was not so impressive anymore I guess :).
The museums are also great for kids. We went several times with our daughter and she loved it every time.
Amazing aircraft, well-deserving of the "Queen of the Skies" moniker, I can still vividly remember going up to the upper deck and cockpit and the view out of the front/side windows.
Oh gracious no, Airbus started with the utilitarian A300 widebody twin[1].
Concorde was Sud Aviation and BAC joint venture, nothing to do with Airbus which didn't even exist at that time.
[1]The original A300A might have been interesting, having a fuselage as wide as the much later 777, but Airbus got cold feet and scaled it down to the dull and worthy A300B. Every Airbus widebody until the A380 was constrained by that decision.
https://en.wikipedia.org/wiki/Airbus#History has a diagram of all the predecessor companies.