In the 2005 revival, we see that the doors of the TARDIS are consistent from inside to outside (from the inside, they look like you'd expect them to in a real police box). But the original series depicted them very differently. The "honeycomb" wall had a panel that opened and somehow connected to the police box doors as seen from the outside.
In the revival series, this allows for views directly from outside to inside (or vice versa), and shots like that of the motorcycle ridden straight into and around the console.
In the original series, you never (that I recall) see through the open doors into the console room from outside the police box like has been done a number of times in the revival. There is always a sort of shadowy blackness within the police box that characters emerge from or disappear into. Likewise, they just seem to disappear around the edge of the interior door.
So, I have always wondered: is there any canon depiction or explanation of the connection between the inner and outer doors of the original series TARDIS? Is there a hallway or vestibule?