St. Regis Chicago

The St. Regis Chicago (formerly Wanda Vista Tower) is a 101-story, 1,198 ft (365 m) multi-use supertall skyscraper within the Lakeshore East development in Chicago, Illinois, United States. Completed in 2020, it is the city's third-tallest building, behind the Willis Tower and Trump Hotel and Tower. Designed by architect Jeanne Gang and her architectural firm, Studio Gang Architects, it is the tallest structure in the world designed by a woman.

The Magellan Development Group jointly developed the tower with the Chinese firm Wanda Group. Magellan, who had hired Gang to design Aqua in Lakeshore East, rehired her for the Vista Tower in 2014. The Chicago Plan Commission approved plans for the building in late 2015, and a groundbreaking ceremony took place on September 6, 2016. The Wanda Vista topped out in April 2019, and Wanda sold its ownership stake to Magellan the next year. The tower was renamed the St. Regis Chicago in November 2020 after St. Regis Hotels & Resorts agreed to operate the hotel. The hotel rooms did not open until 2023 due to uncertainty over who would operate its restaurants, while sales of the condominiums lagged expectations.

The St. Regis consists of three interconnected masses with differing heights. The superstructure uses a buttressed core, and unlike in most buildings, the building's perimeter columns step inward and outward. The building contains uninhabited "blow-through floors" to reduce wind-induced sway, and six tuned mass damper tanks also counteract the movement of the wind. Inside, the St. Regis Hotel occupies the first 10 floors of the structure with 192 units, while the St. Regis Residences consists of 393 luxury condominium residences from the 11th floor upward. There is an amenity area for residents on floor 47, as well as two restaurants in the hotel section of the building.