User blog comment:Cool fool/Battlefield 3 Gameplay Ideas and Recommendations/@comment-70.30.55.73-20110625220125/@comment-1439572-20110626201608

Well they're bound to do this, even on remake maps, because if you can't go inside a building through a door, you could blow it up, so they HAVE to create interiors.

Otherwise you'd just find a hollow space/solid rock filling inside.