User blog comment:Omega natsu2/Chapter 384: Surfing Lucy, Predictions./@comment-7418318-20140429214931/@comment-7418318-20140430143113

For one thing there's the chance that Alegria was limited to the areas where Humans were present and for another there's also the possibility that the curse only sucked in and solidified organic stuff.

I don't remember seeing any furniture or similar stuff drawn into the walls.