From a Kotaku article...the Bridge from Las Vegas Hilton's Star Trek Experience was torn apart and thrown to the side of the street. This was the only other set for TNG's Enterprise D's bridge seeing that the original bridge was destroyed in Star Trek: Generations. IT's a very sad thign to see and I believe it was done deliberately to just hurt Star Trek.
I have to agree with most of the comments on this article too..the pictures are just horrible to look at..
Even the article states the obvious that the set could have been auctioned off or given to a charity...just disguesting.