an Entity references as follows:
The Frank Lloyd Wright/Prairie School of Architecture Historic District is a residential neighborhood in the Cook County, Illinois village of Oak Park, United States. The Frank Lloyd Wright Historic District is both a federally designated historic district listed on the U.S. National Register of Historic Places and a local historic district within the village of Oak Park. The districts have differing boundaries and contributing properties, over 20 of which were designed by Frank Lloyd Wright, widely regarded as the greatest American architect.