See also The Creche.
This was a room labeled "Criss's Room" on our original, 1986, headmap. We assume that the Christinas had been using this room for a long while to hide their identities from us, to mask their presence, to blend, shift, gatekeep, etc. We have no conscious knowledge or memory of what went on in this room.
A few years ago we created a pocket dimension from this room to The House.
In the spaceship remodel, this was expanded to become The Creche, a set of 2 (now 3) separate areas including the interface to The House and a new Nursery at first, and now adding a teen Recreation Center so that there are now 3 areas where there was 1 before.