The laws of physics forbid an item from being bigger on the inside, so in order to find things that are larger inside than out we must forego standard science and head into the realm of science fiction.
There we can find amazing objects with interior spaces roomy enough for Time Lords, Grouches and families of wizards to chill in, the perfect places for a daydream. (Illustration by Hello With Cheese)
-Via Geeks Are Sexy
I would not want to stand next to something that does that much stronger on a human sized scale though.