Grand Plaza is a residential apartment building in Chicago. The 57 story building was completed in 2003 at a height of 641 feet when measured from its decorative spires. Grand Plaza I is one of the tallest all-residential buildings in Chicago and contains 481 luxury apartment units. Until July 1st, 2008, it was the tallest building in the Chicago ZIP Code 60610, the ZIP Code with the most high-rises in the city. On July 1st, 2008, the building ended up being in a new ZIP Code: 60654.