From artist, Anish Kapoor, the creator of Chicago’s Bean, comes the Sky Mirror. From September 19th through October 27th, this 35-foot concave mirror made of polished stainless steel will rest at Rockefeller Center and offer an upside down view of 30 Rockefeller Plaza.

Its concave side, angled upward, will face 30 Rockefeller Plaza, reflecting an upside-down portrait of this elegant and iconic New York City skyscraper and the shifting sky around it. Its convex side, facing Fifth Avenue, will reflect a more earthly vision: viewers in the midst of the adjacent streetscape. The sculpture is freestanding, with polished surfaces that are seamless and uninterrupted. This optical object will change through the day and night and is an example of what Kapoor describes as a “non-object,” a sculpture that, despite its monumentality, suggests a window or void and often seems to vanish into its surroundings.

At nearly three stories tall, it’s a larger version of Nottingham’s Sky Mirror. In case you forgot, this is the second time in recent months that New York City has received a piece of secondhand public art. In May, Larry Silverstein unveiled Jeff Koons’ “Balloon Flower (Red)” at WTC 7, just one of many versions of the same sculpture.

If we can’t have a fresh new shape, at least we’ve got it bigger.

Computer rendering of Sky Mirror via NY Times.