If you zoom as much as you can and try to keep zooming while you finish a level (like if B is walking to the finish but didn't go there yet), the viewpoint will glitch. It can go inside a building, from the bottom, etc. When you solve regular levels, you'll only get a glimpse of it before you go back to the menu. But if you do it in the level creator, it will stay that way until you try to zoom in/out or re-enter the level.