Washu's subspace contains five planets and a lot of neat inventions. So, needless to say, there is room for people to roam about. In fact, the girls bathroom in the Masaki residence, with a luxurious bath, is actually located on one of the five planets in Washu's subspace. Just as the door to the girl's bathroom serves as a link in and out of subspace, so the following links are doors out of subspace (at least in my fantasy world).
Non-Anime Links:
Organizion Links:
