801 Grand
801 Grand is a 45-story, 630-foot office skyscraper built from 1989 to 1991 for developer and owner Principal Financial Group, designed by Hellmuth Obata and Kassabaum (HOK). It is the tallest building in both Des Moines and the state of Iowa, part of Principal's larger downtown campus, and features a skywalk connection and an eight-sided copper pyramid at its top. It is operated and managed by JLL Americas and was previously known as The Principal Building.
Photo: Richc80 , CC BY 2.5