The U.S. Baháʼí House of Worship in Wilmette, Illinois is striking: it doesn’t seem like the three-tiered temple with a Renaissance dome belongs in the neighborhood of large homes where it sits.

The Baháʼí House of Worship stands in contrast to its suburban surroundings. Known as the holiest Baháʼí temple, it’s also the oldest in the world. Editor’s note: This story was originally published ...