Crystal Palace for the Werkbund Exhibition The Glass Pavilion , built in 1914 and designed by Bruno Taut , was a prismatic glass dome structure at the Cologne Deutscher Werkbund Exhibition . [1] [2] The structure was a brightly colored landmark of the exhibition, and was constructed using concrete and glass. [1] [2] The concrete structure had inlaid colored glass plates on the facade that acted as mirrors. [3] Taut described his little temple of beauty as « …reflections of light whose colors began at the base with a dark blue and rose up through moss green and golden yellow to culminate at the top in a luminous pale yellow. [3] archinform