Michigan) purchased the building. The building's 2000-2002 renovation, to house State offices, was one of the nation's largest historic renovation projects. When the renovation project was completed it was renamed Cadillac Place as a tribute to Detroit's founder, Antoine Laumet de La Mothe, sieur de Cadillac. Cadillac Place currently houses over 2,000 State employees including the Michigan Court of Appeals for District I. The building's former executive office suite serves as the Detroit office for Michigan's governor and attorney general, and several Justices of the Michigan Supreme Court have offices in the building. Architecture The building rises 15 stories to a total height of , with the top floor at . The building has 31 elevators. It was originally constructed with and expanded to . Designated a National Historic Landmark on June 2, 1978, it is an exquisite example of Neoclassical architecture. Designed by architect Albert Kahn, the structure consists of a two-story base with four parallel 15-story wings connecting to a central perpendicular backbone. Kahn used this design to allow sunlight and natural ventilation to reach each of the building's hundreds of individual offices. The entire building is faced in limestone and is crowned with a two-story Corinthian colonnade. In 1923, it opened as the second largest office building in the world (behind the Equitable Building in New York City). The base of the building is surrounded by an arched colonnade supported by Ionic columns. The entrance is set into a loggia behind three arches of the Grand Boulevard facade. It intersects the arcade to form a large elevator lobby with a coffered ceiling. Interiors The interior features a vaulted arcade. An Italian marble from quarries near Chiampo, Vicenza, Veneto, known as , covers its walls. Floors on the ground level are gray Tennessee marble. The arcade was originally lined by stores and an auditorium which could be used for corporate functions or by community groups. The auditorium space was later converted into an auto showroom. On the upper stories, floors are also gray Tennessee marble, while corridor walls are covered in the original white Alabama marble. On the lower level two swimming pools were located, one was converted into a cafeteria. Tile with a water theme gives a hint to the original use of the cafeteria space. A depressed driveway extending between Cass and Second divides the lower level of the main building from the lower level of