Making the camera travel through a hole in a letter
Here's one idea for the effect, which you can even do in Premiere:


Get a live-action camera shot where the camera is slowly trucking forward.
In post-production, create a title that has at least one letter with a hole in it (A, B, D, O, P, Q, etc.).
Lay the title over the top of the trucking-in shot.
Animate the scale and position of the title over several seconds, so that the title gets larger and larger, and the hole stretches towards the edges of the screen. Since this is happening while the camera in the live-action scene is trucking forward, it will appear that the title is hovering in the air within the live-action scene.
When the hole in the letter is larger than the screen (because of the increasing scale), the animation is done.  At that point, it will appear as though the camera has traveled "through" the hole in the title, and is continuing to move forward.  (You can cut the title from the timeline at that point.)