art - Can anyone identify this (allegedly) Ansel Adams photo of an ornate interior?

My wife purchased this photographic print some years ago. It is signed "Ansel Adams" on the back (it could be a stamp, or it could be an actual signature in pencil). The subject matter is a Middle Eastern interior, far different from the landscapes Adams is known for. The seller said it was a photo of the Ahwahnee Hotel in Yosemite, but that seems unlikely. Can anyone identify this photo for me? Is it really Ansel Adams? Any recommendations for other sources to check this out?