Pokémon X and Pokémon Y

A new building shown in the Smash Trailer. No idea what it could be... Possible Elite 4 entrance (where you verify your badges)? Or maybe it's a gym?

[video=youtube;TgurWjrmBrQ]http://www.youtube.com/watch?v=TgurWjrmBrQ&sns=tw[/video]

It's this building here , seems to be on the same stretch as the daycare. I really doubt it's the elite 4 entrance. it's way too small and out of the way.

I doubt it's a gym either. gyms are usually in towns.