In this episode, we go inside Lady Gaga's "Gypsy Palace," where she and Bradley Cooper first discussed "A Star Is Born”; a double geodesic dome home in Indiana that's seriously nuts (and seriously stuck in the '80s); and a modest home built by Chip and Joanna Gaines in 2011, before they hit fame with "Fixer Upper.” Plus, the interior design rules experts say you should never break (we’re guilty of a few!). And can you guess which city has the most annoying neighbors?