Time Lord Technology
Luckily, I happened to run across Marcus Prospero's TARDIS.
The missing "police box" sign is inside.
Naturally, since it is made with Time Lord Technology, the TARDIS is bigger on the inside.
I've always wondered what was at the bottom of these things...
With three levels and furnishings that are both lovely and interesting, there is plenty to look at and click.
Time Lords do lots of research.
Like all good Time Machines, the console has plenty of levers and knobs.
Considering that I have no Advanced Knowledge of the inner workings and the physics of the universe, my inability to make the thing go no matter what combination of levers and wheels I used is only to be expected.
Several of the control panels will teleport you to other locations! Don't worry, the Tardis follows you so you won't be lost forever.
Marcus Prospero's TARDIS, Lippert (153, 108, 171)