Between World War I and World War II, reformist Fiorello La Guardia was elected as the new mayor in 1933 and took office in 1934, marking the fall of Tammany Hall after 80 years of dominating politics in New York City. Once the city's demographics were steadier, labor unionization provided protection and affluence to the working class. Despite the Great Depression, some of the world's tallest skyscrapers of the time were built in Manhattan during the 1930s, including many Art Deco masterpieces that are still part of the city's skyline today. The most well-known structures are Empire State Building, the Chrysler Building, and the GE Building.