Ann Hamilton's installation, The Event of a Thread, is currently open to the public at the Park Avenue Armory. There are a number of swings suspended throughout the entire space. Each swing's chains are connected to wires that are then connected to pulleys and an enormous piece of white silk that spans across the length of the space. The swinging motion causes the silk to continuously undulate and move. It's beautiful and the sheer size of the space and the installation itself is amazing.