“Architecture is about space, not walls.” That was what Frank Lloyd Wright said he learned from designing his first public building, Unity Temple in his then-home of Oak Park, Illinois. And the building shows what he learned. The Universalist Church of Oak Park had been struck by lightning and burned to the ground in 1905. When it came time to build its replacement, Wright was awarded the commission. Inside, there are two separate spaces—one for worship and one for social gatherings. Both are lit by skylights and connected by a central…
