The Spanish colonial missions in the American Southwest, built in the seventeenth through nineteenth centuries, have left a lasting impression on the American cultural landscape and psyche. As a colonial project, they subjugated Indigenous populations and coalesced Spain’s control over vast territory. As conurbations, they now form the nucleus of many modern cities. In terms of their built forms, they were notably the inspiration for the Mission Revival style, an architectural and decorative arts idiom that emerged in the late nineteenth century.