The St Regis Chicago, formerly known as the Vista Tower, is a groundbreaking 101story skyscraper, standing as the third tallest in Chicago and tenth in the U.S. Its construction and engineering, designed by Jeanne Gang, are revolutionary. The building features three unique spires, with a frustum shape and moving columns creating an iconic look. A blowthrough hole near the top prevents excessive sway in high winds, setting it apart from conventional counterbalance methods. The greenblue glass, sourced from algae, not only enhances aesthetics but also minimizes bird collisions.

Originally a collaboration with Wanda Group, the tower shifted to St Regis after concerns, becoming a blend of condos and a luxury hotel. The cost of construction was $1 billion, contributing over $155 million to the economy during construction and an annual economic output of $48 million.

The tower's amenities include a luxurious hotel with 191 rooms, a range of residential units, and exclusive amenities like a sky terrace, outdoor pool, fitness center, and butler service. The butler service, a signature of St. Regis, offers various services, from packing to personal errands, and is complimentary for all residents.

In terms of power consumption, the St Regis, with its 1,414,000 sq feet, is committed to sustainability, with LEED Silver certification and energyefficient features. The estimated power consumption ranges from 42.4 to 49 million kWh, capable of powering over 4600 average American houses. Despite the substantial electricity cost of around $5.5 million per year, the tower's primary residential use is viewed more favorably than other projects.