Translation:There is a small police box at the intersection.
I have three minor quibbles.
交番 is bigger than a breadbox, but much smaller than a station.
These facilities sometimes have room for more than two officers. At busy train stations, in particular.
They sometimes stand empty—at night or while the officers are out on patrol. Then, they are either locked up tight or only open Tardis-like to a desk with a phone.