Baha'i House of Worship, temple

en.wikipedia.org/wiki/Bah%C3%A1'%C3%AD_House_of_Worship
The Mother Temple of Europe is located at the foot of the Taunus Mountains of Germany, in the village of Langenhain, in the Frankfurt suburb of Hofheim, Hesse. The design was made by Teuto Rocholl. It was completed in 1964 and is constructed of steel, aluminum and glass. Five hundred and forty diamond-shaped windows give the dome an optical lightness and permit the sunlight to play in it. The outstanding characteristic acoustics of this setting are created by the reverberation within the dome and the resonance of its myriad window ledges. Choirs here sometimes sing while standing around the circumference of the temple floor, with the audience in the center.