As part of Abu Dhabi's fourth annual art fair, Japanese artist Tadashai Kawamata created a round tower made of thousands stacked chairs. Called "Chairs For Abu Dhabi", the approximately 20-foot tall sculpture took Kawamata about five days to build. The artist has installed previous versions of the piece in France, but the Abu Dhabi artwork is very unique. "This time it's not a specific chair at all," he said. "It's more of a mixture of all kinds of wooden, metal, colorful chairs - everything. An empty chair is waiting for people to sit down, and then a chair is connecting to other chairs," he explained. "So it's really like a waiting spot, open for everybody to sit down. That's kind of the metaphor we're using."