What does it mean??

Lately, most of my dreams have been set in the same place. It's a structurally beautiful, spacious communal house, yet it feels rather cold. The story lines vary drastically, most I don't even remember, but they are all centered in this tiny world. It's starting to get eerie because I recognize the microcosm so well. Usually I'm part of a huge group, consisting mostly of the people I see the most, congregated in a great hall in the middle of the building. There are towering archways of granite that make a promenade on each floor of the multileveled forum. It's equal parts entranceway and hiding place. The tone is similar to the reoccurring dreams I used to have about fighting terrorists in a post-WWIII era, but there hasn't been any fighting or strategizing in these recent dreams, everything just seems drab. I'm not sure how literal I should take it, but after looking up symbols in online dream dictionaries, I think it could have something to do with figuring out how to accept that I'm an actual adult. It could also be telling me that I need to let more people in and not be afraid. The house and threshold might also indicate that I need to reconcile some of my own beliefs in order to progress in the future. The apocalyptic undertone might denote that major changes are occurring in my life or emotional state. What does it mean? What is coming at me?