Anish Kapoor: Past, Present, Future

There's no shortage of outdoor sculpture in the U.S. Most of it just sits there sunning itself, pretty much unnoticed by the people who go by. Then there's Cloud Gate, by the artist Anish Kapoor, born in Mumbai (formerly Bombay) and based in London. It's not just a work of art; it's a destination. Four years ago, it landed at Chicago's Millennium Park, where in no time it became an essential photo op. A fat, arching pillow of reflective steel, it's a giant fun-house mirror that bends people, clouds and the skyline into endlessly shifting puddles. Who can say no to...