Originally Posted by
Volume
Unfortunately both supersonics are rotting away quickly...
If you look at the sorry state of some 10-15 years older aircraft in that museum, I am afraid both airframes will be lost within 20 years.
Luckily at least 7 Concordes are preserved indoor (Scotland, Bristol, Yeovilton, Duxford, Toulouse, Washington, Paris), for the Tu-144 the situation is worse. The one in Monino still looks OK after 30 years in the open...
The Concorde at the Seattle Museum of Flight isn't technically indoors, but it is undercover.