Midtown Manhattan, fueled by postwar prosperity, was experiencing an unprecedented building boom that changed its very appearance. Glass-and-steel office towers in the new International Style began to replace the ziggurat-style towers (built in wedding-cake style) of the prewar era. Also rapidly changing was the eastern edge of the East Village close to FDR Drive. Many traditional apartment blocks were cleared and replaced with large-scale public housing projects. In Lower Manhattan, urban renewal began to take shape around 1960, led by David Rockefeller's construction of the One Chase Manhattan Plaza building.