Courtesy Rahm Emanuel via Twitter (@ChicagosMayor)

By next summer, a new riverfront office tower in Chicago will be in the company of a Santiago Calatrava, FAIA, sculpture. Revealed at a press conference on Monday, the 29-foot-tall by 29-foot-wide artwork "twists in an outward reaching spiral constructed of overlapping leaflike elements descending in scale from very large at the sculpture’s base to very small at the outer reach of the sculpture’s spiral form," according to a press release.

The 52-story building, named River Point, was designed by New Haven, Conn.–based Pickard Chilton and was completed last year. At the tower base, a 1.5-acre park designed by OJB Landscape Architecture abuts the river, and this is where the Calatrava sculpture will be installed.