The Guardian Building is a landmark skyscraper in the United States, located at 500 Griswold Street in Downtown Detroit, Michigan, within the Financial District. The Guardian is a class-A office building owned by Wayne County, Michigan and serves as its headquarters. Built in 1928 and finished in 1929, the building was originally called the Union Trust Building and is a bold example of Art Deco architecture, including art moderne designs. At the top of the Guardian Building's spire is a large U.S. flag, complementing the four smaller flags atop nearby 150 West Jefferson. The building has undergone recent award-winning renovations. It was designated a National Historic Landmark on June 29, 1989, and the associated Detroit Financial District is on the National Register of Historic Places. The Guardian building includes retail and a tourist gift shop. Architecture The main frame of the skyscraper rises 36 stories, capped by two asymmetric spires, one extending for four additional stories. The roof height of the building is 496 ft (151 m), the top floor is 489 feet (149 m), and the spire reaches 632 ft (192.6 m). Its nickname, Cathedral of Finance, alludes both to the building's resemblance to a cathedral—with its tower over the main entrance and octagonal apse at the opposite end—and to New York City's Woolworth Building, which had earlier been dubbed the Cathedral of Commerce. Native American themes are common inside and outside the building. Wirt C. Rowland, of the Smith, Hinchman & Grylls firm, was the building's architect. The building rises from a granite and stone six story base with two Corrado Parducci created sculptures flanking the Griswold Street entrance. The exterior blends brickwork with tile, limestone, and terra cotta. Rowland's attention to detail was meticulous. He supervised the creation of the colored brick cladding to achieve the desired color for the exterior. Afterward, the brick was marketed by the manufacturer as "Union Trust Brick" and after 1939, as Guardian brick". Rowland designed furniture for the bank's offices and his attention went as far as designing tableware, linens and waitress uniforms for a restaurant in the building. The building's three story, vaulted lobby is lavishly decorated with Pewabic and Rookwood tile. The semi-circular exterior domes are filled with Pewabic Pottery; Mary Chase Perry Stratton worked closely with the architect in the design of the symbolic decorations. (See Savage, infra.) A Monel metal screen divides the lobby from the banking