The supersonic plane that was faster than Concorde
cnn.com
cnn.com
They have a XB-70 on display and it's amazing how large the plane is! There's also a pretty good documentary on it from Discovery's "Great Planes" (https://www.imdb.com/title/tt2158498/) if you want to nerd out.
It was definitely ahead of it's time.
Still, it is one of the most beautiful aircraft ever to fly.