How did Unity Temple use concrete and natural light?

Unity Temple, designed by Frank Lloyd Wright, demonstrates a masterful use of materials and light to create a monumental yet intimate space.

Concrete Construction

Wright utilized concrete to achieve a consistent and durable structure. The building features massive walls and a reinforced roof, which allowed for a cohesive, fireproof design that improved upon his earlier work on the Larkin Company building. By using concrete, Wright was able to create a sense of timeless monumentality while employing ingenious interior ornamentation that emphasized the building's spatial qualities rather than its physical mass.1

Natural Light

To maintain an intimate atmosphere and shield the congregation from city noise, the temple is turned inward. The interior is defined by a top-lit cube of space. This design choice allows for balanced, natural illumination that highlights the interior architecture without relying on traditional window placements that would connect the space to the exterior environment.1