If you ever get around Sinsheim in Germany I would highly recommend a visit to the Sinsheim technology museum they have both a Tupolev [0] and a Concorde on top of their roof together with a lot of other interesting exhibitions.
There used to be a tour of the Airbus factory in Toulouse, where they made A380s, and at the end of the tour we took a bus across the tarmac and were able to walk around and go inside a Concorde. It was amazing.
It is a much bigger plane on the outside than you might think. That wing is huge.
The Airbus factory has had a museum nearby since 2015, Aeroscopia [1]. It hosts two Concordes, among others (like the Super Guppy [2]). It has a pre-production Concorde (F-WTSB), used for test flights, and an Air France one (F-BVFC). It’s worth a visit for any aviation enthusiast.
You used to be able to go inside the test flight one, but it’s a cramped space, so things might be different while covid regulations are in force.
part of the reason for the Concorde's decline was the fairly tight cabin, which was likened by some to be almost bus-like.
With the advent of lie-flat business class seats in the late 90s and early 2000s, Concorde became much less appealing since one could just fly a redeye to London and have a comfortable sleep than be cramped for a shorter period of time.
We went on the tour maybe 10 years ago so my memory is a bit vague but I think the aisle was actually raised so you would have to step down into the seats. Could that be right?
Unfortunately your initial comment comes off as a snark. On top of that you took your time to actually find a photo supporting your argument but didn’t bother searching for a photo of the entrance to the planes?
Ok wow. That’s some amazing effort to find room for not just the exhibit but to make it accessible to the visitors! These two German museums just jumped out of no where into the top ten of my science/engineering museum bucket list.
I always love the extra landing gear added to the Concorde to avoid tail strikes on rotation - sometimes "patches" are the correct solution to infrequent problems!
[0]: https://sinsheim.technik-museum.de/en/tupolev-tu-144