This is as far down as you can go.

The GRAND FOYER is still a few floors down, but you think taking the TRANSPORTALIZER would defeat the point of showing off your rooms full of DOODADS AND GIZMOS from your VIVIDLY SUCCESSFUL LIFE.

Speaking of which, here are some of the GIZMOS now. You've built better since, but you just can not seem to let these old pieces go.