Barely elevated above this rock wall is the green copper dome of Temppeliaukio Church. Planning for this Lutheran church began in the 1930s. The project was halted because of World War II. After a second design was submitted nearly 30 years later, those plans were scaled back significantly. The results? Temppeliaukion Kirkko was carved out of solid bedrock. Similar to a bunker, it is mostly underground. Since Temppeliaukio Church opened in 1969, it earned the nickname Church of the Rock.