Market Tower is a skyscraper located at the corner of Illinois and Market streets. Completed in 1988, it has 32 floors, making it the fourth tallest building in the city. It is unknown whether the 8 spires at the top of the tower are included in the building height, which is 421 feet (128 m). Market Tower is the tallest concrete reinforced tower in the state of Indiana. It is primarily used for office space.