1000M would join other major projects, like the Vista and NEMA towers, that have reshaped the skyline in the post-recession building boom. Vista, a 101-story, 1,191-foot hotel and condominium tower on East Wacker Drive, has three curving stalks that step upward from east to west. NEMA, a 76-story, 896-foot apartment high-rise on Grant Park’s southern edge, has a stepped profile that recalls the dramatic setbacks of Willis Tower, still the city’s tallest building.