late-19th- and early-20th-century buildings and skyscrapers. Daniel Burnham, Louis Kamper, and the Smith Hinchman & Grylls firm are among the architects who designed some of the city's other important skyscrapers at the turn of the century which endure today. Burnham's three remaining Detroit skyscraper designs are the Neo-Classical styled Chrysler House (1912) — renovated in 2002, and the Neo-Renaissance Whitney (1915) and Ford (1909) buildings. Among their early projects, Smith Hinchman & Grylls designed the Neo-Gothic R.H. Fyfe Building (1919) at Woodward and Adams, now converted to a residential high-rise. Detroit has preserved numerous historic buildings that are listed on the National Register of Historic Places. The city has many historic structures needing restoration. The most significant of these is the Michigan Central Station (1913) by Warren & Wetmore and Reed & Stem; it was bought by Ford in 2018 and is to be the center of a major multi-use development. During the Roaring Twenties, Detroit's historic skyline arose. Louis Kamper designed the ornate Neo-Renaissance styled Book-Cadillac Hotel (1924), which was the world's tallest hotel when it opened. The city's architectural legacy is rich in Art Deco style, with buildings constructed during the boom years of the 1920s. Joseph L. Hudson, the department store magnate, had commissioned architect Hugh Ferriss to produce a series of renderings depicting new buildings for the city skyline. Hudson's Department Store window displayed the Ferriss drawings to commemorate its fiftieth anniversary, and to celebrate the opening in 1927 of a new building for the Detroit Institute of Arts, a Beaux-Arts, Italian Renaissance-styled structure. Other architects created designs inspired by the Hugh Ferriss concepts, which included the Guardian Building, the David Stott Building, the J.L Hudson Building, and others. Albert Kahn Associates designed what is now Cadillac Place (1923) for General Motors, featuring Neo-Classical architecture. Kahn, sometimes called the "architect of Detroit", originally worked for John Scott, who designed the Wayne County Building (1897). It opened as the second-largest office building in the world. The seven Fisher brothers, who owned the automotive company Fisher Body, essentially gave architect Kahn a blank check to design and build the "most beautiful building in the world." This was the Fisher Building (1927) which, with its detailed work, has been called the city's "largest art object." Its opulent three-story, barrel-vaulted lobby is constructed with forty different kinds of marble. Albert Kahn Associates chief architect for the Fisher Building was Joseph