These stylistic features are most prominent in Pitkänen’s public works, but small windows or a round window, for example, often also enliven the simplistic appearance of his residential buildings. Some buildings have rounded corners, but cube-like forms nevertheless dominate Pitkänen’s architecture.
The appearance of the old police station has remained almost original. In 1965, an extra row of windows was added onto the south-west wall, only to be later bricked up in connection with the renovation of the Art Hall – thus restoring the building’s original appearance. The exterior colour of the building has varied: Under the current lime mortar’s white surface there are also remnants of a light yellow and pink surface.