Ok, so, Scooby’s doghouse has an entire mansion inside of it.

It’s basically an even more poorly-cloaked TARDIS.

It’s full of grand entryways…

…numerous statues…

…and hallways teeming with art.

Art that… is sitting on top of other art, and a statue? Somehow?

…with collars that magically turn into yellow hair?

…and frames that, when swinging away to reveal a safe, disappear for two frames because the animators completely forgot it exists?

and that, in the subsequent closeup, makes the overlapping art to the left disappear into the ether?

Either Scooby’s architect was M.C. Escher, or Carl just got lazy again.