A design competition was held for the Imatra town hall last year. 1966–1967. The competition was won by architects Arto Sipinen and Mane Hetzer. The town hall according to the winners' plans was completed in 1970.
The building's 3-story, rectangular mass rises from the civic square, which covers the parking area below it. The office spaces are grouped on the outer walls, and the courtyard located in the middle of the building and the council meeting hall with a granite surface piercing through three floors make the central entrance hall with its associated stairs and side corridor balconies a rich and varied space composition.
The building's clear and flexible floor plan is advantageous in terms of both the shopping public and the changing needs of the offices. The partition walls of the office spaces are lightweight elements, so the room division can be freely changed if necessary.
The exterior of the council meeting hall, the elevator tower, the stairs and the floor of the 1st floor are covered with Imatra gray granite. The same material is repeated in the plinths. The dominant material of the facades is special glass that reflects heat and light rays and bronze.
The courtyard of the town hall was covered in 2002, when a warm, spacious central lobby space was created in the middle of the town hall as a meeting place for customers and staff. The floor of the lobby is polished Amadeus granite. The lobby was designed by Arkkitehtoimisto Arto Sipinen Oy/ Ari Sipinen.