Wiki-hosting service Wikia is launching a brand new feature that lets users collaboratively annotate maps of just about anything — and that includes nerdy fictional locations like Game of Thrones Westeros or even the inside of the Millennium Falcon. Though its still in beta, the new section of the site already includes a number of user-created maps that give you a good idea of whats possible. A detailed cut-away image of the Millennium Falcon, for example, has such nitty gritty details that you can read about the ships freight loading room or check where all of the exits are. The maps are also embeddable so that they can be shared relatively easily — the beta is open until tomorrow, with no word on when an official launch will be happening.