The church hall is special too as it offers the most impressive space perception experience with a total height of 30 meters: the high, narrow windows and the light colour emphasize the feeling of space, freedom and heavenly openness. The rafters are four meters wide, the longest is 35 meters. The floor is covered with beige coloured clinker bricks and it slants half a meter down to the altar, which ensures an un-hindered view to the altar from all parts ofthe church. The room area is 1,200 m2 offering seating for 1120 people.
Besides the building, the Pietiläs also designed the interior of the church, inserting even more references to the biblic stories. The altar, the pews and the organ front are made out of Finnish pine wood. The wood sculpture above the altar is called “a broken reed” (Is. 42:3) and refers to the indestructible condition of those who believe in Christ: they will appear as broken reeds but they will never truly break. It is a message of endurance, resistance and perseverance. The organ with 41 registers, three manuals and one pedal were ordered from the nearby organ factory of Kangasala in 1966, the front is 16 meters high and designed by the Pietiläs. The church of Kaleva is a well-functioning centre of action:there are rooms for different church activities on three stories (diaconia, confirmation classes, child work, studies etc), allunder one roof, which has proved to be very practical.