Temppeliaukio Church

Temppeliaukio Church (Finnish: Temppeliaukion kirkko) is a Lutheran church in the Töölö neighborhood of Helsinki. The church was designed by architects and brothers Timo and Tuomo Suomalainen and opened in 1969. Built directly into solid rock, it is also known as the Church of the Rock and Rock Church. The interior was excavated and built directly out of solid rock and is bathed in natural light which enters through the skylight surrounding the center copper dome. The church is used frequently as a concert venue due to its excellent acoustics. The acoustic quality is created by the rough, virtually unworked rock surfaces. The iconic rock walls were not included in the original competition entry, even though the Suomalainen brothers had considered the idea, because they believed that it was too radical for the competition jury. But when conductor Paavo Berglund shared his knowledge of acoustics from some of the best music halls and the acoustical engineer Mauri Parjo gave requirements for the wall surfaces, the Suomalainen brothers discovered that they could fulfill all the requirements for the acoustics by leaving the rock walls exposed in the Church Hall. The Temppeliaukio church is one of the most popular tourist attractions in the city; half a million people visit it annually. The stone-hewn church is located in the heart of Helsinki. Maintaining the original character of the square is the fundamental concept behind the building. The idiosyncratic choice of form has made it a favorite with professionals and aficionados of architecture.