The Fourth Kind Agency is somewhat run-down, with wooden furniture, signs and windows decorating the place. There's also a Japanese sword being held in one of its corners.
In the anime, the office is cleaner and more modern. Instead of Japanese sword, there's now a safe in the corner, and Fourth Kind's desk is bigger. The walls are also decorated with traditional Japanese paper lanterns (chōchin) as well as posters with Japanese writing.
The outside building is decorated with yellow-black construction warning stripes.