In the centre of the urban district of Töölö is the unique Church in the rock. Timo and Tuomo Suomalainen built it in 1969. The internal volume of the temple carved into the rock. The dome is made of glass and copper relies on wall-rock. The inner surface of the dome is made of copper plates, stacked in a spiral that creates the illusion of a very high arch, although the distance from the floor to the highest point is 12 meters. The Church has excellent acoustics. Concerts of organ and violin music.