Concrete. :p

I had to look up what the material pictured is, and was somewhat surprised to see that it is polyurethane foam. I thought it was ceramic, but needed to double check.

Really? Phony concrete then.

Well, they were trying to save money.

Want any hints?

Nah, let it go awhile and see what guesses come up. :D

Something for acoustics?

Park bench/table next to a wall.

Hint: It glides.

Uh, a glider? (porch glider. outdoor couch with swinginess)

Nope. It glides through the air.

It's foam, but the foam is just the outer skin. It's metal underneath.

If it looks big, that's because it is big.

Space capsule?

Good enough!

It's the flaps from the wing of the Enterprise space shuttle and the side of the tail. The Enterprise never flew in space, so it had no engines and the heat tiles were made only of foam. (I didn't know that.) But it flew several missions in the Earth's atmosphere, taken up onto the back of a 747 and gliding down.

See the yellow circle for the area of the shot.

Wow - very cool.

Where did you see that? Did you get to see inside?

I think I need to hit the Air Force museum this summer.

I'm surprised the gaps between tiles are so pronounced.