Skidmore Owings & Merrill has revealed a new set of renderings for Project Commodore, a 1,600-foot supertall office skyscraper that would become the tallest building in Midtown East and the tallest in the Western Hemisphere by roof height. Addressed as 175 Park Avenue, the 83-story project is being developed by RXR Realty and TF Cornerstone and is planned to rise on the site of the 26-story Grand Hyatt New York. The structure will yield 500 Hyatt hotel rooms on the upper floors spanning 453,000 square feet; 10,000 square feet of retail space on the ground and cellar levels; and 2.1 million square feet of office space. The Grand Hyatt New York is currently zoned for 860,000 square feet of development and is bound by 42nd Street to the south, Lexington Avenue and the Chrysler Building to the east, 420 Lexington Avenue to the north, and Grand Central Terminal to the west.