North of Helsinki’s Hietaniemi area, along Fredrikinkatu, is Helsinki’s Rock Church. Designed by Timo and Tuomo Suomalainen in the late 1960s, the underground interior of the church was carved out of and built directly into the ancient solid rock of the Helsinki peninsula.
The inside of the church is bathed in a glorious natural light that enters through the glazed dome. It has a shallow circular dome (13 meters high) of copper sheeting and glass borne on concrete ribs. The church is also used as a concert hall due to its excellent acoustics created by the rough, unworked rock surfaces of the interior. Guided tours are available, and if visiting in summer, be sure to visit the on-site café for a unique dining experience.