Waldorf Astoria Hotel, 1931.

Originally two separate 19th century hotels that become one, on the land later occupied by the Empire State Building in the 1930s, the Waldorf Astoria Hotel opened its doors at 50th Street and Park Avenue in 1931. At the time it was the tallest and largest hotel in the world. President Hoover mentioned the hotel in a White House address, saying, "The opening of the new Waldorf Astoria ... marks the measure of nation's growth in power, in comfort, and in artistry."

Built on the plot of land previously occupied by the New York Central Railroad powerhouse, the 47-story Art Deco building was designed by architects Schultze and Weaver. The main hotel occupied the lower 20-floors, while the central twin Waldorf Towers (topped with bronze-clad cupolas) were designed for 100 suites, with a portion of them leased as long term residences. Famous tenants of the building have included Herbert Hoover, General Douglas MacArthur, Bugsy Siegel, Lucky Luciano, and Cole Porter.